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A188227 as a simple table

n a(n)
1 1
2 3
3 12
4 81
5 598
6 4859
7 41748
8 374820
9 3475284
10 33053399
11 320869264
12 3167899567
13 31721907390
14 321494911644
15 3292220700520
16 34018798556265
17 354312456839426
18 3716173628641396
19 39220841304052510
20 416264662788000213

[1,3,12,81,598,4859,41748,374820,3475284,33053399,
 320869264,3167899567,31721907390,321494911644,
 3292220700520,34018798556265,354312456839426,
 3716173628641396,39220841304052510,
 416264662788000213]

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Last modified December 5 15:06 EST 2021. Contains 349557 sequences. (Running on oeis4.)