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A155221 as a simple table

n a(n)
2 1
3 7
4 25
5 70
6 500
7 7410
8 81126
9 1254921
10 35099024
11 1318005942
12 58686994598
13 3824088664649
14 368413623404582
15 47231934784100638
16 8189977602765893624 

[1,7,25,70,500,7410,81126,1254921,35099024,
 1318005942,58686994598,3824088664649,
 368413623404582,47231934784100638,
 8189977602765893624]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)