A168812 - OEIS

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A168812 as a simple table

n	a(n)
0	1
1	39
2	1482
3	56316
4	2140008
5	81320304
6	3090171552
7	117426518976
8	4462207721088
9	169563893401344
10	6443427949251072
11	244850262071540736
12	9304309958718547968
13	353563778431304822784
14	13435423580389583265792

[1,39,1482,56316,2140008,81320304,3090171552, 117426518976,4462207721088,169563893401344, 6443427949251072,244850262071540736, 9304309958718547968,353563778431304822784, 13435423580389583265792]