A106902 - OEIS

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A106902

Primes of the form 3x^2-3xy+5y^2, with x and y nonnegative.

3, 5, 11, 17, 23, 29, 41, 71, 107, 113, 131, 167, 173, 197, 227, 233, 269, 311, 317, 347, 401, 419, 431, 449, 479, 503, 521, 617, 641, 653, 677, 683, 719, 743, 809, 821, 827, 839, 857, 881, 887, 911, 929, 941, 947, 983, 1013, 1031, 1049, 1061, 1091

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Discriminant=-51.

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

MATHEMATICA

QuadPrimes2[3, -3, 5, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A045410 A248173 A244029 * A343048 A293711 A155938

Adjacent sequences: A106899 A106900 A106901 * A106903 A106904 A106905

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved