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A081021 as a simple table

n a(n)
1 1
2 12
3 375
4 22155
5 2113020
6 295956045
7 57148456365
8 14541025999500
9 4712328126180675
10 1894168782984052575
11 924528651354021413700
12 538492713580088225984025

[1,12,375,22155,2113020,295956045,57148456365,
 14541025999500,4712328126180675,
 1894168782984052575,924528651354021413700,
 538492713580088225984025]

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Last modified September 27 13:48 EDT 2021. Contains 347688 sequences. (Running on oeis4.)