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A345244 as a simple table

n a(n)
1 1
2 1
3 3
4 6
5 19
6 57
7 177
8 586
9 1950
10 6642
11 22990
12 80400
13 284346
14 1014237
15 3644841
16 13185810
17 47976382
18 175458798
19 644630064
20 2378084209
21 8805524949
22 32714828733
23 121917589291
24 455625246297
25 1707142362234
26 6411576477380
27 24133229559243
28 91023263056629
29 343964618949140
30 1302098673500514

[1,1,3,6,19,57,177,586,1950,6642,22990,80400,
 284346,1014237,3644841,13185810,47976382,
 175458798,644630064,2378084209,8805524949,
 32714828733,121917589291,455625246297,
 1707142362234,6411576477380,24133229559243,
 91023263056629,343964618949140,1302098673500514]

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Last modified October 26 18:30 EDT 2021. Contains 348268 sequences. (Running on oeis4.)