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A213865 as a simple table

n a(n)
0 1
1 1
2 56
3 13326
4 7364321
5 7236515981
6 10915151070941
7 23060727168393236
8 64157120593526429971
9 224909472938181653263446
10 961415357313559098150122721
11 4886376056824611061263607492146
12 28944590736206982153001156958037271
13 196631118571992127875305845382720388771 

[1,1,56,13326,7364321,7236515981,10915151070941,
 23060727168393236,64157120593526429971,
 224909472938181653263446,
 961415357313559098150122721,
 4886376056824611061263607492146,
 28944590736206982153001156958037271,
 196631118571992127875305845382720388771]

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Last modified May 14 20:17 EDT 2024. Contains 372533 sequences. (Running on oeis4.)