A318069 - OEIS

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A318069 as a simple table

n	a(n)
1	1
2	6
3	18
4	73
5	316
6	3029
7	46884
8	935951
9	38183961
10	2877277695
11	323244675173
12	63938089963412
13	22744080515948233
14	13243562482553493420

[1,6,18,73,316,3029,46884,935951,38183961, 2877277695,323244675173,63938089963412, 22744080515948233,13243562482553493420]