A197216 - OEIS

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A197216 as a simple table

n	a(n)
1	1
2	73
3	1537
4	30940
5	706153
6	15034832
7	322715244
8	6984694296
9	150562726618
10	3245505223710
11	70004837612015
12	1509763068769076
13	32557618945328577
14	702121520920633674
15	15141824337674655027
16	326544294704293876446

[1,73,1537,30940,706153,15034832,322715244, 6984694296,150562726618,3245505223710, 70004837612015,1509763068769076,32557618945328577, 702121520920633674,15141824337674655027, 326544294704293876446]