A206170 - OEIS

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A206170 as a simple table

n	a(n)
1	15
2	85
3	641
4	5257
5	44585
6	385465
7	3375401
8	29817817
9	264999305
10	2364834745
11	21162573161
12	189737549977
13	1703284356425
14	15303437762425
15	137574211418921
16	1237227532571737
17	11129405572871945
18	100130796836040505

[15,85,641,5257,44585,385465,3375401,29817817, 264999305,2364834745,21162573161,189737549977, 1703284356425,15303437762425,137574211418921, 1237227532571737,11129405572871945, 100130796836040505]