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A221654 as a simple table

n a(n)
1 4
2 165
3 5879
4 233781
5 9205038
6 361920243
7 14231277957
8 559508202559
9 21998529416773
10 864916824326146
11 34006078606756565
12 1337021958499590092
13 52567889662651586240
14 2066819505041258667820
15 81261447625183841077280

[4,165,5879,233781,9205038,361920243,14231277957,
 559508202559,21998529416773,864916824326146,
 34006078606756565,1337021958499590092,
 52567889662651586240,2066819505041258667820,
 81261447625183841077280]

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Last modified December 2 05:01 EST 2021. Contains 349437 sequences. (Running on oeis4.)