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A252897 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 1
5 0
6 0
7 1
8 1
9 1
10 0
11 0
12 1
13 6
14 18
15 12
16 36
17 156
18 295
19 429
20 755
21 2603
22 7122
23 19232
24 32818
25 54363
26 172374
27 384053
28 933748
29 1639656
30 4366714
31 20557751
32 83801506
33 188552665
34 399677820
35 640628927
36 2175071240
37 8876685569
38 32786873829
39 108039828494

[1,0,0,0,1,0,0,1,1,1,0,0,1,6,18,12,36,156,295,429,
 755,2603,7122,19232,32818,54363,172374,384053,
 933748,1639656,4366714,20557751,83801506,
 188552665,399677820,640628927,2175071240,
 8876685569,32786873829,108039828494]

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Last modified April 18 07:55 EDT 2024. Contains 371769 sequences. (Running on oeis4.)