A169181 - OEIS

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A169181 as a simple table

n	a(n)
0	1
1	24
2	552
3	12696
4	292008
5	6716184
6	154472232
7	3552861336
8	81715810728
9	1879463646744
10	43227663875112
11	994236269127576
12	22867434189934248
13	525950986368487704
14	12096872686475217192
15	278228071788929995416

[1,24,552,12696,292008,6716184,154472232, 3552861336,81715810728,1879463646744, 43227663875112,994236269127576,22867434189934248, 525950986368487704,12096872686475217192, 278228071788929995416]