A062494 - OEIS

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A062494 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	4
6	22
7	195
8	2813
9	65960
10	2461846
11	142900605
12	12629963361
13	1667181039424
14	322952216807257
15	90343400059852993
16	35964677954267885714
17	20101122321919710856624
18	15578877275203698667362792

[1,1,1,1,1,4,22,195,2813,65960,2461846,142900605, 12629963361,1667181039424,322952216807257, 90343400059852993,35964677954267885714, 20101122321919710856624, 15578877275203698667362792]