A297311 - OEIS

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A297311 as a simple table

n	a(n)
1	12
2	207
3	2577
4	35476
5	484808
6	6623719
7	90535227
8	1237278512
9	16909630099
10	231098841942
11	3158359335337
12	43164380571143
13	589914903106589
14	8062194454707849
15	110183650123040906
16	1505847685192695964

[12,207,2577,35476,484808,6623719,90535227, 1237278512,16909630099,231098841942,3158359335337, 43164380571143,589914903106589,8062194454707849, 110183650123040906,1505847685192695964]