A117141 - OEIS

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A117141 as a simple table

n	a(n)
1	2
2	7
3	47
4	383
5	10321919
6	51011754393599
7	1130138339199322632554990773529330319359999999
8	73562883979319395645666688474019139929848516028923903999999999

[2,7,47,383,10321919,51011754393599, 1130138339199322632554990773529330319359999999, 73562883979319395645666688474019139929848516028923\ 903999999999]