A131706 Squares of the form 4*A014574(n-1) + 1.

25, 49, 121, 169, 289, 961, 1681, 1849, 2401, 5929, 6889, 10201, 11881, 14161, 17689, 32041, 41209, 69169, 76729, 80089, 94249, 96721, 108241, 124609, 142129, 165649, 170569, 175561, 185761, 190969, 214369, 223729, 243049, 332929, 337561

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[600]^2, PrimeQ[(# - 1)/4 - 1] && PrimeQ[(# - 1)/4 + 1] &] (* Stefan Steinerberger, Sep 17 2007 *)

Crossrefs

Sequence in context: A104777 A289829 A358060 * A110015 A110586 A046949

Adjacent sequences: A131703 A131704 A131705 * A131707 A131708 A131709

Keyword

nonn

Author

Giovanni Teofilatto, Sep 17 2007

Extensions

More terms from Stefan Steinerberger, Sep 17 2007

Status

approved