A220600 - OEIS

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A220600 as a simple table

n	a(n)
1	1
2	117
3	25747
4	3174778
5	352586943
6	41011388731
7	4807269151250
8	561355035745825
9	65523075831128720
10	7650441027984730028
11	893266330737712903338
12	104295209452828358545715
13	12177239947634323813819907

[1,117,25747,3174778,352586943,41011388731, 4807269151250,561355035745825,65523075831128720, 7650441027984730028,893266330737712903338, 104295209452828358545715, 12177239947634323813819907]