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A250585 as a simple table

n a(n)
1 40
2 167
3 639
4 2375
5 8625
6 30952
7 110187
8 390391
9 1378890
10 4860979
11 17115235
12 60214730
13 211741401
14 744338632
15 2616055529
16 9193203944
17 32303585679
18 113504084395
19 398802149195
20 1401180399346
21 4922940442496
22 17296221980468

[40,167,639,2375,8625,30952,110187,390391,1378890,
 4860979,17115235,60214730,211741401,744338632,
 2616055529,9193203944,32303585679,113504084395,
 398802149195,1401180399346,4922940442496,
 17296221980468]

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Last modified December 2 13:56 EST 2021. Contains 349445 sequences. (Running on oeis4.)