A113390 - OEIS

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A113390 as a simple table

n	a(n)
0	1
1	6
2	66
3	1091
4	24891
5	737061
6	27110418
7	1199197442
8	62240034172
9	3718021355407
10	251730371459590
11	19076604651022143
12	1601423150451641820
13	147628858305489901288
14	14834881996161804192069

[1,6,66,1091,24891,737061,27110418,1199197442, 62240034172,3718021355407,251730371459590, 19076604651022143,1601423150451641820, 147628858305489901288,14834881996161804192069]