A296633 - OEIS

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A296633 as a simple table

n	a(n)
1	21
2	286
3	3581
4	44783
5	565149
6	7121315
7	89713772
8	1130293195
9	14240708558
10	179419300176
11	2260512981540
12	28480330069267
13	358825298187419
14	4520860415119973
15	56958579395700728
16	717624409759413294

[21,286,3581,44783,565149,7121315,89713772, 1130293195,14240708558,179419300176,2260512981540, 28480330069267,358825298187419,4520860415119973, 56958579395700728,717624409759413294]