A110014 Primes p such that 6p + 7 is a square.

3, 7, 19, 47, 59, 103, 139, 227, 307, 367, 467, 503, 619, 839, 887, 1039, 1319, 1567, 1699, 1907, 1979, 2203, 2687, 3407, 4003, 4759, 4987, 5827, 6079, 6599, 7703, 8287, 9203, 9679, 10499, 10667, 11527, 12239, 13159, 14503, 16747, 17387, 19379, 22447

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Formula

a(n) = (A110015(n) - 7)/6.

Mathematica

Select[Prime[Range[3000]], IntegerQ[Sqrt[6#+7]]&] (* Harvey P. Dale, Dec 08 2010 *)

Crossrefs

Cf. A110015, A110016.

Sequence in context: A280756 A029855 A209397 * A026581 A151535 A181360

Adjacent sequences: A110011 A110012 A110013 * A110015 A110016 A110017

Keyword

easy,nonn

Author

Giovanni Teofilatto, Sep 03 2005

Extensions

Corrected and extended by Ray Chandler, Sep 04 2005

Status

approved