A126152 - OEIS

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A126152 as a simple table

n	a(n)
0	1
1	4
2	36
3	744
4	28536
5	1736064
6	152914176
7	18372559104
8	2885671339776
9	573765893121024
10	140835811776316416
11	41820352964911908864
12	14774712204104658671616
13	6124078747943873540112384

[1,4,36,744,28536,1736064,152914176,18372559104, 2885671339776,573765893121024,140835811776316416, 41820352964911908864,14774712204104658671616, 6124078747943873540112384]