A144727 - OEIS

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A144727 as a simple table

n	a(n)
1	11
2	31
3	151
4	1051
5	10501
6	126001
7	1764001
8	26460001
9	502740001
10	10557540001
11	274496040001
12	7960385160001
13	238811554800001
14	9313650637200001
15	381859676125200001
16	21384141863011200001
17	1325816795506694400001

[11,31,151,1051,10501,126001,1764001,26460001, 502740001,10557540001,274496040001,7960385160001, 238811554800001,9313650637200001, 381859676125200001,21384141863011200001, 1325816795506694400001]