A165422 - OEIS

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A165422 as a simple table

n	a(n)
1	1
2	4
3	4
4	16
5	256
6	65536
7	4294967296
8	18446744073709551616
9	340282366920938463463374607431768211456
10	115792089237316195423570985008687907853269984665640564039457584007913129639936

[1,4,4,16,256,65536,4294967296, 18446744073709551616, 340282366920938463463374607431768211456, 11579208923731619542357098500868790785326998466564\ 0564039457584007913129639936]