A239823 - OEIS

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A239823 as a simple table

n	a(n)
1	57
2	2981
3	204779
4	13597573
5	884977259
6	58232200212
7	3842974545029
8	253291756984373
9	16698512969146104
10	1101377884320804108
11	72647284903645567684
12	4791845462621985366247
13	316083646998469552591720

[57,2981,204779,13597573,884977259,58232200212, 3842974545029,253291756984373,16698512969146104, 1101377884320804108,72647284903645567684, 4791845462621985366247,316083646998469552591720]