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A220214 as a simple table

n a(n)
1 4
2 23
3 179
4 1220
5 8293
6 56222
7 381710
8 2590727
9 17589144
10 119424780
11 810841360
12 5505221601
13 37377776290
14 253776579983
15 1723016657167
16 11698425649722
17 79426490548861
18 539266359896222
19 3661350337743288
20 24858747550166703

[4,23,179,1220,8293,56222,381710,2590727,17589144,
 119424780,810841360,5505221601,37377776290,
 253776579983,1723016657167,11698425649722,
 79426490548861,539266359896222,3661350337743288,
 24858747550166703]

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Last modified September 20 21:32 EDT 2021. Contains 347591 sequences. (Running on oeis4.)