Full list of non-zero Kazhdan-Lusztig-Vogan polynomials:

 0:  0: 1

 1:  1: 1

 2:  2: 1

 3:  3: 1

 4:  0: 1
     1: 1
     4: 1

 5:  0: 1
     5: 1

 6:  1: 1
     6: 1

 7:  2: 1
     7: 1

 8:  3: 1
     8: 1

 9:  0: 1
     1: 1
     4: 1
     5: 1
     6: 1
     9: 1

10:  5: 1
    10: 1

11:  6: 1
    11: 1

12:  7: 1
    12: 1

13:  8: 1
    13: 1

14:  0: 1
     1: 1
     4: 1
     5: 1
    14: 1

15:  0: 1
     1: 1
     4: 1
     6: 1
    15: 1

16:  2: 1
     7: 1
    16: 1

17:  3: 1
     8: 1
    17: 1

18:  5: 1
     6: 1
     9: 1
    10: 1
    11: 1
    18: 1

19:  0: 1
     1: 1
     4: 1
     5: 1
     6: 1
     9: 1
    14: 1
    15: 1
    19: 1

20: 10: 1
    20: 1

21: 11: 1
    21: 1

22: 12: 1
    22: 1

23: 13: 1
    23: 1

24:  5: 1
    10: 1
    14: 1
    24: 1

25:  6: 1
    11: 1
    15: 1
    25: 1

26:  7: 1
    12: 1
    16: 1
    26: 1

27:  8: 1
    13: 1
    17: 1
    27: 1

28: 10: 1
    11: 1
    18: 1
    20: 1
    21: 1
    28: 1

29:  5: 1
     6: 1
     9: 1
    10: 1
    11: 1
    14: 1
    15: 1
    18: 1
    19: 1
    24: 1
    25: 1
    29: 1

30: 20: 1
    22: 1
    30: 1

31: 21: 1
    23: 1
    31: 1

32: 10: 1
    20: 1
    24: 1
    32: 1

33: 11: 1
    21: 1
    25: 1
    33: 1

34: 12: 1
    22: 1
    26: 1
    34: 1

35: 13: 1
    23: 1
    27: 1
    35: 1

36:  0: q
     5: q
    14: 1
    15: 1
    19: 1
    24: 1
    36: 1

37:  1: q
     6: q
    14: 1
    15: 1
    19: 1
    25: 1
    37: 1

38: 16: 1
    26: 1
    38: 1

39: 17: 1
    27: 1
    39: 1

40: 10: 1
    11: 1
    18: 1
    20: 1
    21: 1
    24: 1
    25: 1
    28: 1
    29: 1
    32: 1
    33: 1
    40: 1

41: 14: 1
    15: 1
    19: 1
    24: 1
    25: 1
    29: 1
    36: 1
    37: 1
    41: 1

42: 20: 1
    21: 1
    22: 1
    23: 1
    28: 1
    30: 1
    31: 1
    42: 1

43: 20: 1
    22: 1
    30: 1
    32: 1
    34: 1
    43: 1

44: 21: 1
    23: 1
    31: 1
    33: 1
    35: 1
    44: 1

45: 24: 1
    32: 1
    36: 1
    45: 1

46: 25: 1
    33: 1
    37: 1
    46: 1

47: 26: 1
    34: 1
    38: 1
    47: 1

48: 27: 1
    35: 1
    39: 1
    48: 1

49: 24: 1
    25: 1
    29: 1
    32: 1
    33: 1
    36: 1
    37: 1
    40: 1
    41: 1
    45: 1
    46: 1
    49: 1

50: 20: 1
    21: 1
    22: 1
    23: 1
    28: 1
    30: 1
    31: 1
    32: 1
    33: 1
    34: 1
    35: 1
    40: 1
    42: 1
    43: 1
    44: 1
    50: 1

51: 32: 1
    34: 1
    43: 1
    45: 1
    47: 1
    51: 1

52: 33: 1
    35: 1
    44: 1
    46: 1
    48: 1
    52: 1

53: 12: q
    13: q
    22: q
    23: q
    42: 1
    53: 1

54: 14: q
    24: q
    36: 1
    37: 1
    41: 1
    45: 1
    54: 1

55: 15: q
    25: q
    36: 1
    37: 1
    41: 1
    46: 1
    55: 1

56: 38: 1
    47: 1
    56: 1

57: 39: 1
    48: 1
    57: 1

58: 36: 1
    37: 1
    41: 1
    45: 1
    46: 1
    49: 1
    54: 1
    55: 1
    58: 1

59: 45: 1
    47: 1
    51: 1
    54: 1
    56: 1
    59: 1

60: 46: 1
    48: 1
    52: 1
    55: 1
    57: 1
    60: 1

61: 32: 1
    33: 1
    34: 1
    35: 1
    40: 1
    43: 1
    44: 1
    45: 1
    46: 1
    47: 1
    48: 1
    49: 1
    50: 1
    51: 1
    52: 1
    61: 1

62: 12: q
    13: q
    22: q
    23: q
    26: q
    27: q
    34: q
    35: q
    42: 1
    50: 1
    53: 1
    62: 1

63:  7: q^2
     8: q^2
    12: q^2
    13: q^2
    53: 1
    63: 1

64: 36: q
    45: q
    54: 1
    55: 1
    56: 1
    58: 1
    59: 1
    64: 1

65: 37: q
    46: q
    54: 1
    55: 1
    57: 1
    58: 1
    60: 1
    65: 1

66: 45: 1
    46: 1
    47: 1
    48: 1
    49: 1
    51: 1
    52: 1
    54: 1
    55: 1
    56: 1
    57: 1
    58: 1
    59: 1
    60: 1
    61: 1
    66: 1

67: 26: q
    27: q
    34: q
    35: q
    38: q
    39: q
    47: q
    48: q
    50: 1
    61: 1
    62: 1
    67: 1

68:  7: q^2
     8: q^2
    12: q^2
    13: q^2
    16: q^2
    17: q^2
    26: q^2
    27: q^2
    53: 1
    62: 1
    63: 1
    68: 1

69:  2: q^3
     3: q^3
     7: q^3
     8: q^3
    63: 1
    69: 1

70: 54: 1
    55: 1
    56: 1
    57: 1
    58: 1
    59: 1
    60: 1
    64: 1
    65: 1
    66: 1
    70: 1

71: 38: q
    39: q
    47: q
    48: q
    56: q
    57: q
    61: 1
    66: 1
    67: 1
    71: 1

72: 16: q^2
    17: q^2
    26: q^2
    27: q^2
    38: q^2
    39: q^2
    62: 1
    67: 1
    68: 1
    72: 1

73:  2: q^3
     3: q^3
     7: q^3
     8: q^3
    16: q^3
    17: q^3
    63: 1
    68: 1
    69: 1
    73: 1

74:  2: q^4
     3: q^4
    69: 1
    74: 1

429 nonzero polynomials, and 916 zero polynomials,
 at 1345 Bruhat-comparable pairs.