A222743 - OEIS

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A222743 as a simple table

n	a(n)
1	6
2	657
3	126947
4	27397461
5	6178897165
6	1424636571214
7	332960192034230
8	78562540663580982
9	18671065206165526715
10	4462727856303175610197
11	1071642436817030793550208
12	258331591188039785463763488

[6,657,126947,27397461,6178897165,1424636571214, 332960192034230,78562540663580982, 18671065206165526715,4462727856303175610197, 1071642436817030793550208, 258331591188039785463763488]