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A012823 as a simple table

n a(n)
0 1
1 3
2 53
3 1855
4 156425
5 19537595
6 3987121981
7 1087120051511
8 408148372272017
9 193531749818796403
10 116081047496759766725
11 84538055378229508493871
12 74205177566923695709271961

[1,3,53,1855,156425,19537595,3987121981,
 1087120051511,408148372272017,193531749818796403,
 116081047496759766725,84538055378229508493871,
 74205177566923695709271961]

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Last modified May 28 05:47 EDT 2022. Contains 354112 sequences. (Running on oeis4.)