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A020474 as a simple table

n a(n)
2 1
3 0
4 1
5 0
6 1
7 2
8 0
9 0
10 2
11 4
12 0
13 0
14 1
15 5
16 9
17 0
18 0
19 0
20 3
21 12
22 21
23 0
24 0
25 0
26 1
27 9
28 30
29 51
30 0
31 0
32 0
33 0
34 4
35 25
36 76
37 127
38 0
39 0
40 0
41 0
42 1
43 14
44 69
45 196
46 323
47 0
48 0
49 0
50 0
51 0
52 5
53 44
54 189
55 512
56 835
57 0
58 0
59 0
60 0
61 0
62 1
63 20
64 133
65 518
66 1353
67 2188
68 0
69 0
70 0
71 0
72 0
73 0
74 6
75 70
76 392
77 1422
78 3610
79 5798
80 0
81 0
82 0
83 0

[1,0,1,0,1,2,0,0,2,4,0,0,1,5,9,0,0,0,3,12,21,0,0,
 0,1,9,30,51,0,0,0,0,4,25,76,127,0,0,0,0,1,14,69,
 196,323,0,0,0,0,0,5,44,189,512,835,0,0,0,0,0,1,20,
 133,518,1353,2188,0,0,0,0,0,0,6,70,392,1422,3610,
 5798,0,0,0,0]

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Last modified February 19 20:48 EST 2018. Contains 299357 sequences. (Running on oeis4.)