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A257346 Numbers not of the form x^2+xy+2y^2. 2
3, 5, 6, 10, 12, 13, 15, 17, 19, 20, 21, 24, 26, 27, 30, 31, 33, 34, 35, 38, 39, 40, 41, 42, 45, 47, 48, 51, 52, 54, 55, 57, 59, 60, 61, 62, 65, 66, 68, 69, 70, 73, 75, 76, 78, 80, 82, 83, 84, 85, 87, 89, 90, 91, 93, 94, 95, 96, 97, 101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..60.

CROSSREFS

Complement of A028951.

Sequence in context: A065873 A072282 A028727 * A047327 A028927 A099190

Adjacent sequences:  A257343 A257344 A257345 * A257347 A257348 A257349

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 30 2015

STATUS

approved

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Last modified February 18 09:39 EST 2020. Contains 332011 sequences. (Running on oeis4.)