A201604 Primes of the form 7n^2 + 3.

3, 31, 2803, 3391, 10111, 32371, 34303, 67231, 70003, 87811, 114691, 161731, 179203, 231871, 285631, 302851, 338803, 409951, 473203, 502771, 588703, 596851, 621631, 638431, 672703, 753091, 809203, 1075651, 1246591, 1294303, 1367551

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Mathematica

Select[Table[7n^2+3, {n, 0, 3000}], PrimeQ]

Prog

(Magma) [a: n in [0..700] | IsPrime(a) where a is 7*n^2+3];

Crossrefs

Sequence in context: A081789 A066976 A172645 * A048562 A022499 A129209

Adjacent sequences: A201601 A201602 A201603 * A201605 A201606 A201607

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 03 2011

Status

approved