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A305987 as a simple table

n a(n)
0 1
1 1
2 2
3 9
4 52
5 355
6 2976
7 29897
8 343988
9 4423503
10 63088600
11 992691205
12 17095554444
13 319404545291
14 6427307831504
15 138546745515393
16 3185841858310180
17 77866726065935239
18 2016161715005701128
19 55127056896177521981
20 1587073087715010466556
21 47982707153606476112067
22 1519931218769637781731712

[1,1,2,9,52,355,2976,29897,343988,4423503,
 63088600,992691205,17095554444,319404545291,
 6427307831504,138546745515393,3185841858310180,
 77866726065935239,2016161715005701128,
 55127056896177521981,1587073087715010466556,
 47982707153606476112067,1519931218769637781731712]

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)