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A230840 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 2
6 0
7 0
8 22
9 22
10 0
11 0
12 162
13 656
14 162
15 0
16 0
17 1202
18 16496
19 16496
20 1202
21 0
22 0
23 8974
24 416540
25 1361842
26 416540
27 8974
28 0
29 0
30 66990
31 10550264
32 114297392
33 114297392
34 10550264
35 66990
36 0
37 0
38 500018
39 267165468
40 9617769208
41 32002769030
42 9617769208

[0,0,0,0,2,0,0,22,22,0,0,162,656,162,0,0,1202,
 16496,16496,1202,0,0,8974,416540,1361842,416540,
 8974,0,0,66990,10550264,114297392,114297392,
 10550264,66990,0,0,500018,267165468,9617769208,
 32002769030,9617769208]

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Last modified May 13 19:11 EDT 2024. Contains 372522 sequences. (Running on oeis4.)