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A181227 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 26
7 702
8 11734
9 156976
10 1847636
11 20046784
12 205891684
13 2034977036
14 19567350334
15 184421027812
16 1712803733352
17 15736451922346
18 143435108141199
19 1299841823088167
20 11730670902611152
21 105559108929460026

[0,0,0,0,0,26,702,11734,156976,1847636,20046784,
 205891684,2034977036,19567350334,184421027812,
 1712803733352,15736451922346,143435108141199,
 1299841823088167,11730670902611152,
 105559108929460026]

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Last modified July 22 14:07 EDT 2024. Contains 374499 sequences. (Running on oeis4.)