A172635 - OEIS

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A172635 as a simple table

n	a(n)
1	1
2	616227
3	15120204295
4	2411829493241299
5	358060848206529563811
6	75490918169569448369461821
7	17949532724881770551236183389177
8	4867117722741777809293028167592172435

[1,616227,15120204295,2411829493241299, 358060848206529563811,75490918169569448369461821, 17949532724881770551236183389177, 4867117722741777809293028167592172435]