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A091339 as a simple table

n a(n)
1 1
2 2
3 3
4 8
5 27
6 220
7 5945
8 1307906
9 7775501177
10 10169624642405370
11 79073928376671158546120499
12 804152170591192270227367107671577224679640
13 63587471141272584754077292003976884470033921630214659882200111940371

[1,2,3,8,27,220,5945,1307906,7775501177,
 10169624642405370,79073928376671158546120499,
 804152170591192270227367107671577224679640,
 63587471141272584754077292003976884470033921630214\
 659882200111940371]

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Last modified December 20 15:43 EST 2014. Contains 252266 sequences.