A323520 Numbers of the form p^(k^2) where p is prime and k >= 0.

1, 2, 3, 5, 7, 11, 13, 16, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 81, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263

Offset: 1

Author

Gus Wiseman, Jan 17 2019

Keywords

• nonn

Crossrefs

Cf. A000290, A000961, A001248, A001597, A026478, A050376, A277562, A323519, A323526, A323528.

Programs

Mathematica

Select[Range[100],#==1||PrimePowerQ[#]&&IntegerQ[Sqrt[FactorInteger[#][[1,2]]]]&]