A113410 - OEIS

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

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OFFSET

1,2

COMMENTS

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

LINKS

Table of n, a(n) for n=1..55.

MATHEMATICA

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

CROSSREFS

Cf. A064370, A086968.

Sequence in context: A043053 A004163 A350328 * A099654 A195959 A228141

Adjacent sequences: A113407 A113408 A113409 * A113411 A113412 A113413

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 28 2005

STATUS

approved