A201605 Primes of the form 7n^2 + 4.

11, 67, 179, 347, 571, 1187, 1579, 2027, 2531, 5107, 9587, 10651, 15467, 16811, 18211, 21179, 24371, 33331, 35291, 37307, 41507, 43691, 63179, 65867, 68611, 71411, 80147, 89387, 99131, 105907, 109379, 116491, 127579, 147179

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Mathematica

Select[Table[7n^2+4, {n, 0, 1000}], PrimeQ]

Prog

(Magma) [a: n in [0..300] | IsPrime(a) where a is 7*n^2+4];

Crossrefs

Sequence in context: A058883 A141969 A142645 * A268458 A001808 A258479

Adjacent sequences: A201602 A201603 A201604 * A201606 A201607 A201608

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 03 2011

Status

approved