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A229619 as a simple table

n a(n)
1 1
2 1
3 4
4 27
5 248
6 2822
7 37820
8 578915
9 9918924
10 187558638
11 3873705128
12 86692262942
13 2089070253556
14 53925007946392
15 1484529898970648
16 43421639185592359
17 1344923240469786704
18 43981996770022295714
19 1514531024603022580980
20 54783958839510354056018
21 2077007174758224026216216

[1,1,4,27,248,2822,37820,578915,9918924,187558638,
 3873705128,86692262942,2089070253556,
 53925007946392,1484529898970648,43421639185592359,
 1344923240469786704,43981996770022295714,
 1514531024603022580980,54783958839510354056018,
 2077007174758224026216216]

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Last modified April 25 10:33 EDT 2024. Contains 371967 sequences. (Running on oeis4.)