A267239 - OEIS

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A267239 as a simple table

n	a(n)
1	2
2	7
3	42
4	567
5	20040
6	2093467
7	683027146
8	723576702570
9	2549735632656528
10	30465608408449993885
11	1250919952257037350168062
12	178764247753852768666003981113
13	89752660973687899647122735126286078

[2,7,42,567,20040,2093467,683027146,723576702570, 2549735632656528,30465608408449993885, 1250919952257037350168062, 178764247753852768666003981113, 89752660973687899647122735126286078]