A102130 Primes of the form 8*n^2 + 4*n + 1.

13, 41, 313, 421, 1013, 1201, 1861, 2113, 2381, 3613, 5101, 7321, 9941, 10513, 13613, 14281, 16381, 20201, 21013, 21841, 24421, 30013, 34061, 41761, 47741, 51521, 52813, 54121, 59513, 60901, 82013, 83641, 90313, 97241, 99013, 100801, 106261

Offset

1,1

Links

Table of n, a(n) for n=1..37.

Mathematica

Select[Table[8n^2+4n+1, {n, 0, 200}], PrimeQ] (* Harvey P. Dale, Jul 24 2012 *)

Prog

(Magma) [ a: n in [0..400] | IsPrime(a) where a is 8*n^2 +4*n + 1]; // Vincenzo Librandi, Nov 17 2010

Crossrefs

Primes in A102083.

Sequence in context: A147247 A028468 A146995 * A080186 A287307 A332255

Adjacent sequences: A102127 A102128 A102129 * A102131 A102132 A102133

Keyword

easy,nonn

Author

Jonathan Vos Post, Feb 14 2005

Status

approved