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A226560 as a simple table

n a(n)
0 1
1 1
2 3
3 21
4 155
5 2691
6 18924
7 732230
8 9223166
9 269544904
10 4308339664
11 264486350330
12 3252603264996
13 283488024709418
14 5058264756924275
15 239269507574263597
16 9478611818612363119
17 788664781674375008343
18 13928483471031628860556
19 1889997256419148641470346

[1,1,3,21,155,2691,18924,732230,9223166,269544904,
 4308339664,264486350330,3252603264996,
 283488024709418,5058264756924275,
 239269507574263597,9478611818612363119,
 788664781674375008343,13928483471031628860556,
 1889997256419148641470346]

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Last modified February 27 16:21 EST 2024. Contains 370378 sequences. (Running on oeis4.)