A057156 - OEIS

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A057156 as a simple table

n	a(n)
0	1
1	4
2	256
3	16777216
4	18446744073709551616
5	1461501637330902918203684832716283019655932542976
6	39402006196394479212279040100143613805079739270465446667948293404245721771497210611414266254884915640806627990306816

[1,4,256,16777216,18446744073709551616, 1461501637330902918203684832716283019655932542976, 39402006196394479212279040100143613805079739270465\ 44666794829340424572177149721061141426625488491564\ 0806627990306816]