A062386 - OEIS

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A062386 as a simple table

n	a(n)
2	1
3	12
4	114
5	1030
6	9290
7	84840
8	787082
9	7415814
10	70867212
11	685839770
12	6712285600
13	66349573368
14	661680191832
15	6651030871168
16	67329662060890
17	685953949494774
18	7028941367108708
19	72403769391718890

[1,12,114,1030,9290,84840,787082,7415814,70867212, 685839770,6712285600,66349573368,661680191832, 6651030871168,67329662060890,685953949494774, 7028941367108708,72403769391718890]