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A247774 as a simple table

n a(n)
0 1
1 1
2 5
3 56
4 461
5 3558
6 23966
7 178127
8 1362597
9 10194184
10 75684682
11 561877016
12 4192125848
13 31292310312
14 233221376211
15 1737652233817
16 12950437458383
17 96538803978663
18 719609376905074
19 5363567352622148
20 39977107204818978
21 297975192242698825
22 2221015587432193750

[1,1,5,56,461,3558,23966,178127,1362597,10194184,
 75684682,561877016,4192125848,31292310312,
 233221376211,1737652233817,12950437458383,
 96538803978663,719609376905074,5363567352622148,
 39977107204818978,297975192242698825,
 2221015587432193750]

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Last modified March 5 13:57 EST 2021. Contains 341823 sequences. (Running on oeis4.)