A087871 Primes of the form (4*k + 1)^2 + (4*k + 2)^2 where k=0,1,2,3,...

5, 61, 181, 613, 1301, 1741, 8581, 9661, 14621, 19013, 23981, 37813, 44701, 49613, 68821, 71821, 94613, 101701, 105341, 163021, 167621, 177013, 244301, 255613, 273061, 303421, 335381, 382813, 456013, 479221, 511061, 552301, 595141, 603901

Offset

1,1

Comments

Primes of the form 32*k^2 + 24*k + 5. - Vincenzo Librandi, Dec 11 2011

Links

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

Mathematica

Select[Table[32n^2+24n+5, {n, 0, 800}], PrimeQ] (* Vincenzo Librandi, Dec 11 2011 *)

Prog

(PARI) fourmp1b(n) = { for(x=1, n, z=(4*x+1)^2+(4*x+2)^2; if(isprime(z), print1(z", ")) ) }
(Magma) [a: n in [0..200] | IsPrime(a) where a is 32*n^2+24*n+5]; // Vincenzo Librandi, Dec 11 2011

Crossrefs

Cf. A088758.

Sequence in context: A182352 A142643 A201848 * A242194 A046976 A092838

Adjacent sequences: A087868 A087869 A087870 * A087872 A087873 A087874

Keyword

nonn,easy

Author

Cino Hilliard, Oct 10 2003

Extensions

More terms from Ray Chandler, Oct 19 2003

Corrected by Vincenzo Librandi, Dec 11 2011

Status

approved