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A110461
as a simple table
n
a(n)
1
5
2
6
3
8
4
16
5
324
6
24794911296
7
6996029506034747046454468824516730633405603329897709154584282406250
[5,6,8,16,324,24794911296, 69960295060347470464544688245167306334056033298977\ 09154584282406250]