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URL: https://oeis.org/A110014

⇱ A110014 - OEIS


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A110014
Primes p such that 6p + 7 is a square.
5
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
FORMULA
a(n) = (A110015(n) - 7)/6.
MATHEMATICA
Select[Prime[Range[3000]], IntegerQ[Sqrt[6#+7]]&] (* Harvey P. Dale, Dec 08 2010 *)
CROSSREFS
Sequence in context: A029855 A209397 A377003 * A026581 A151535 A181360
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Sep 03 2005
EXTENSIONS
Corrected and extended by Ray Chandler, Sep 04 2005
STATUS
approved