A263668 - OEIS

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A263668 as a simple table

n	a(n)
1	12
2	311
3	8839
4	277563
5	8877675
6	283980648
7	9086924328
8	290780258468
9	9304960612844
10	297758659251901
11	9528276948222220
12	304904861127956713
13	9756955544927083173
14	312222577382913349135
15	9991122476200058211783

[12,311,8839,277563,8877675,283980648,9086924328, 290780258468,9304960612844,297758659251901, 9528276948222220,304904861127956713, 9756955544927083173,312222577382913349135, 9991122476200058211783]