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A223005 as a simple table

n a(n)
1 1
2 4
3 24
4 840
5 35471
6 8156595
7 2073830655
8 2804191942757
9 4149994855051281
10 32191007835248846536
11 272625366029849993313502
12 11994700692484110855119938470

[1,4,24,840,35471,8156595,2073830655,
 2804191942757,4149994855051281,
 32191007835248846536,272625366029849993313502,
 11994700692484110855119938470]

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Last modified May 16 18:41 EDT 2022. Contains 353720 sequences. (Running on oeis4.)