A268743 - OEIS

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A268743 as a simple table

n	a(n)
1	2
2	11
3	143
4	4110
5	255651
6	34732937
7	10319681062
8	6744840113811
9	9736268648482947
10	31152408949342676906
11	221573405414594347811555
12	3511390061199964238627005057
13	124222798189336185449669887550302

[2,11,143,4110,255651,34732937,10319681062, 6744840113811,9736268648482947, 31152408949342676906,221573405414594347811555, 3511390061199964238627005057, 124222798189336185449669887550302]