A120494 - OEIS

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A120494 as a simple table

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	13
6	139
7	19136
8	366167031
9	134078294225149313
10	17976988982325707481237962186849833
11	323172132870659875927245721269598505772051876540063951439000722587455

[1,1,2,3,5,13,139,19136,366167031, 134078294225149313, 17976988982325707481237962186849833, 32317213287065987592724572126959850577205187654006\ 3951439000722587455]