A000231 - OEIS

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A000231 as a simple table

n	a(n)
0	2
1	3
2	7
3	46
4	4336
5	134281216
6	288230380379570176
7	2658455991569831764110243006194384896
8	452312848583266388373324160190187140390789016525312000869601987902398529536

[2,3,7,46,4336,134281216,288230380379570176, 2658455991569831764110243006194384896, 45231284858326638837332416019018714039078901652531\ 2000869601987902398529536]