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A068409 as a simple table

n a(n)
0 1
1 2
2 15
3 1140
4 916895
5 8137369800
6 850423134076516
7 1105964895591808388136
8 18627853605123584223921210120
9 4180709311038401636820646431913319660
10 12767818425644517198178541333546326811326975100 

[1,2,15,1140,916895,8137369800,850423134076516,
 1105964895591808388136,
 18627853605123584223921210120,
 4180709311038401636820646431913319660,
 12767818425644517198178541333546326811326975100]

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)