A208411 - OEIS

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A208411 as a simple table

n	a(n)
1	15
2	2795
3	667478
4	163422914
5	40039156736
6	9810325806914
7	2403711876698218
8	588954110860577394
9	144304709913279198696
10	35357337571782719886214
11	8663205247528271356492160
12	2122646395773319892200238358

[15,2795,667478,163422914,40039156736, 9810325806914,2403711876698218,588954110860577394, 144304709913279198696,35357337571782719886214, 8663205247528271356492160, 2122646395773319892200238358]