A162078 - OEIS

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A162078 as a simple table

n	a(n)
1	3
2	15
3	151
4	3495
5	198503
6	28534087
7	10586251623
8	10294697200775
9	26586793509930791
10	184408340876752843335
11	3468543642532070124804583
12	178388170025664039139771509767
13	25266393167195209778186849218689703

[3,15,151,3495,198503,28534087,10586251623, 10294697200775,26586793509930791, 184408340876752843335,3468543642532070124804583, 178388170025664039139771509767, 25266393167195209778186849218689703]