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A243182 Numbers of the form 2x^2+2xy+5y^2. 2
0, 2, 5, 8, 9, 17, 18, 20, 26, 29, 32, 36, 41, 45, 50, 53, 65, 68, 72, 74, 80, 81, 89, 90, 98, 101, 104, 113, 116, 117, 122, 125, 128, 137, 144, 146, 149, 153, 162, 164, 170, 173, 180, 185, 194, 197, 200, 212, 218, 221, 225, 233, 234, 242, 245, 257, 260, 261, 269, 272, 281, 288, 290, 293, 296, 305, 306, 314, 317, 320, 324, 333, 338, 353, 356, 360, 362, 365, 369 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Discriminant -36.

LINKS

Table of n, a(n) for n=1..79.

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

CROSSREFS

Primes: A243183.

Sequence in context: A026448 A258353 A173286 * A088620 A068702 A083724

Adjacent sequences: A243179 A243180 A243181 * A243183 A243184 A243185

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 02 2014

STATUS

approved

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Last modified November 27 19:48 EST 2022. Contains 358406 sequences. (Running on oeis4.)