A112864 - OEIS

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A112864 as a simple table

n	a(n)
1	2
2	11
3	127
4	463
5	20058301
6	17672631901
7	16123801841551
8	51913710643776705684835561
9	12738806129490428451365214301
10	760401738905937245009910944207609329
11	740106499224393094996908447741294397438051

[2,11,127,463,20058301,17672631901,16123801841551, 51913710643776705684835561, 12738806129490428451365214301, 760401738905937245009910944207609329, 740106499224393094996908447741294397438051]