A201857 Primes of the form 8n^2 - 5.

3, 67, 283, 643, 4603, 5827, 8707, 12163, 14107, 18427, 34843, 38083, 41467, 56443, 83227, 93307, 98563, 103963, 109507, 139387, 165883, 172867, 194683, 202243, 233923, 267907, 276763, 285763, 383683, 449347, 484123, 544963, 596227

Offset

1,1

Links

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

Mathematica

Select[Table[8n^2-5, {n, 1, 300}], PrimeQ]

Prog

(Magma) [a: n in [1..300] | IsPrime(a) where a is 8*n^2-5];

Crossrefs

Sequence in context: A263549 A225191 A370659 * A294395 A342505 A186208

Adjacent sequences: A201854 A201855 A201856 * A201858 A201859 A201860

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 06 2011

Status

approved