A110481 Squares of the form 5p - 6, where p is prime.

4, 9, 49, 289, 529, 2209, 2809, 5929, 17689, 20449, 24649, 29929, 37249, 41209, 47089, 54289, 61009, 117649, 120409, 124609, 139129, 146689, 182329, 196249, 208849, 243049, 277729, 332929, 339889, 499849, 588289, 667489, 677329, 717409

Offset

1,1

Links

Table of n, a(n) for n=1..34.

Formula

a(n) = 5*A110482(n) - 6.

Mathematica

Select[Prime[Range[13500]], IntegerQ[Sqrt[5#-6]]&]*5-6 (* James C. McMahon, Apr 20 2024 *)

Crossrefs

Cf. A110480, A110482.

Sequence in context: A006716 A068809 A231177 * A030088 A081069 A053967

Adjacent sequences: A110478 A110479 A110480 * A110482 A110483 A110484

Keyword

nonn,changed

Author

Giovanni Teofilatto, Sep 09 2005

Extensions

Corrected and extended by Ray Chandler, Sep 12 2005

Status

approved