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A247777 as a simple table

n a(n)
0 1
1 1
2 5
3 52
4 451
5 3498
6 23502
7 173611
8 1323447
9 9920654
10 73573634
11 545170514
12 4060213800
13 30266880736
14 225316532881
15 1676398961171
16 12475867876511
17 92870049802057
18 691310371544378
19 5145544200921776
20 38298595223058076
21 285066094324142481
22 2121840794371117780

[1,1,5,52,451,3498,23502,173611,1323447,9920654,
 73573634,545170514,4060213800,30266880736,
 225316532881,1676398961171,12475867876511,
 92870049802057,691310371544378,5145544200921776,
 38298595223058076,285066094324142481,
 2121840794371117780]

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Last modified April 18 20:41 EDT 2021. Contains 343089 sequences. (Running on oeis4.)