A351918 - OEIS

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A351918 as a simple table

n	a(n)
1	1
2	2
3	16
4	262
5	6688
6	231938
7	10130888
8	532099310
9	32582983264
10	2275724862530
11	178357712565096
12	15489332978290006
13	1475661504819976992
14	152969444613431797250
15	17137064243138924753480
16	2062951616302994096028894

[1,2,16,262,6688,231938,10130888,532099310, 32582983264,2275724862530,178357712565096, 15489332978290006,1475661504819976992, 152969444613431797250,17137064243138924753480, 2062951616302994096028894]