A110016 - OEIS

A110016

Numbers n such that (n^2-7)/6 is prime.

5, 7, 11, 17, 19, 25, 29, 37, 43, 47, 53, 55, 61, 71, 73, 79, 89, 97, 101, 107, 109, 115, 127, 143, 155, 169, 173, 187, 191, 199, 215, 223, 235, 241, 251, 253, 263, 271, 281, 295, 317, 323, 341, 367, 377, 389, 395, 397, 403, 415, 425, 433, 439, 443, 449, 457

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

All terms must be odd numbers. - Harvey P. Dale, Jul 02 2019

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = SQRT(A110015(n)).

MATHEMATICA

Select[Range[1, 500, 2], PrimeQ[(#^2-7)/6]&] (* Harvey P. Dale, Jul 02 2019 *)

PROG