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A261781 as a simple table

n a(n)
0 1
1 0
2 1
3 0
4 2
5 3
6 0
7 4
8 16
9 13
10 0
11 8
12 66
13 132
14 75
15 0
16 16
17 248
18 924
19 1232
20 541
21 0
22 32
23 892
24 5546
25 13064
26 13060
27 4683
28 0
29 64
30 3136
31 30720
32 114032
33 195020
34 155928
35 47293
36 0
37 128
38 10888
39 162396
40 893490
41 2327960
42 3116220
43 2075948
44 545835

[1,0,1,0,2,3,0,4,16,13,0,8,66,132,75,0,16,248,924,
 1232,541,0,32,892,5546,13064,13060,4683,0,64,3136,
 30720,114032,195020,155928,47293,0,128,10888,
 162396,893490,2327960,3116220,2075948,545835]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)