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A307956 as a simple table

n a(n)
1 0
2 0
3 1
4 2
5 3
6 12
7 49
8 482
9 6380
10 135252
11 3939509
12 166800470
13 9739584172
14 818717312364
15 95353226103276 

[0,0,1,2,3,12,49,482,6380,135252,3939509,
 166800470,9739584172,818717312364,95353226103276]

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Last modified April 25 09:19 EDT 2024. Contains 371967 sequences. (Running on oeis4.)