A113410 Numbers n such that n^2 is of the form k-th prime - k for some k.

1, 5, 21, 23, 27, 31, 33, 37, 45, 53, 67, 70, 96, 101, 102, 128, 135, 144, 167, 178, 186, 188, 196, 197, 199, 202, 216, 219, 246, 247, 252, 255, 264, 299, 300, 341, 356, 363, 369, 381, 382, 407, 410, 426, 427, 494, 503, 506, 520, 528, 538, 550, 562, 573, 607

Offset: 1

Author

Zak Seidov, Oct 28 2005

Keywords

• nonn

Comments

Values of k: A064370. Numbers n such that n^2 is of the form k-th prime + k for some k A086968.

Crossrefs

Cf. A064370, A086968.

Programs

Mathematica

Sqrt[#]&/@Select[Table[Prime[k]-k,{k,2,40000}],IntegerQ[Sqrt[#]]&] (* Harvey P. Dale, Aug 04 2019 *)