A251011 - OEIS

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A251011 as a simple table

n	a(n)
1	63
2	6653
3	4006992
4	13508173078
5	254604954671538
6	26881736550623664594
7	15886176013807764828256390
8	52561086204509370088955346390030
9	973565980065757968304861029019267809746

[63,6653,4006992,13508173078,254604954671538, 26881736550623664594,15886176013807764828256390, 52561086204509370088955346390030, 973565980065757968304861029019267809746]