A201850 Primes of the form 7n^2 - 4.

3, 59, 563, 1571, 3083, 5099, 22739, 27779, 39371, 60539, 77171, 86243, 95819, 105899, 116483, 163859, 250043, 354371, 455171, 544883, 592763, 694571, 721283, 748499, 776219, 804443, 833171, 1016123, 1081139, 1148171, 1217219, 1324571

Offset

1,1

Links

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

Mathematica

Select[Table[7n^2-4, {n, 1, 1000}], PrimeQ]

Prog

(Magma) [a: n in [1..500] | IsPrime(a) where a is 7*n^2-4];

Crossrefs

Sequence in context: A200957 A057175 A142642 * A013526 A305597 A369949

Adjacent sequences: A201847 A201848 A201849 * A201851 A201852 A201853

Keyword

nonn,easy

Author

Vincenzo Librandi, Dec 06 2011

Status

approved