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A238817 as a simple table

n a(n)
1 1
2 2
3 28
4 1504
5 520176
6 696179102
7 5373177281748
8 166903679914150336
9 28636599794306124116062
10 20262965974179958448766775754

[1,2,28,1504,520176,696179102,5373177281748,
 166903679914150336,28636599794306124116062,
 20262965974179958448766775754]

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Last modified January 17 20:36 EST 2020. Contains 330987 sequences. (Running on oeis4.)