A299513 - OEIS

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A299513 as a simple table

n	a(n)
1	8
2	99
3	477
4	7702
5	84449
6	1190886
7	17345466
8	225351737
9	3159884395
10	44355410329
11	607385669669
12	8438451242502
13	117327474563425
14	1624496219433908
15	22532992590634988
16	312619027436720049
17	4335373141403117615

[8,99,477,7702,84449,1190886,17345466,225351737, 3159884395,44355410329,607385669669,8438451242502, 117327474563425,1624496219433908, 22532992590634988,312619027436720049, 4335373141403117615]