A091126 - OEIS

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A091126 as a simple table

n	a(n)
1	0
2	5
3	37
4	295
5	2384
6	19552
7	165976
8	1439970
9	12711220
10	113758759
11	1029502984
12	9401951850
13	86516283187
14	801235071623

[0,5,37,295,2384,19552,165976,1439970,12711220, 113758759,1029502984,9401951850,86516283187, 801235071623]