A208705 - OEIS

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A208705 as a simple table

n	a(n)
1	8
2	100
3	1268
4	16084
5	204020
6	2587924
7	32826932
8	416398420
9	5281871732
10	66998738836
11	849856117940
12	10780134577876
13	136742325040628
14	1734529687216660
15	22001916633654068
16	279086797488636244

[8,100,1268,16084,204020,2587924,32826932, 416398420,5281871732,66998738836,849856117940, 10780134577876,136742325040628,1734529687216660, 22001916633654068,279086797488636244]