A034042 - OEIS

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A034042

Numbers that are primitively or imprimitively represented by (x^2+xy+2y^2, x>=0, y>=0), but not both.

8

1, 2, 9, 11, 14, 16, 18, 22, 23, 25, 28, 36, 37, 43, 46, 49, 50, 53, 58, 71, 72, 74, 77, 79, 81, 86, 98, 99, 100, 106, 107, 109, 116, 121, 126, 127, 134, 137, 142, 144, 149, 151, 154, 158, 161, 162, 163, 169, 193, 196, 197, 198, 200, 203, 207, 211, 214

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

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..57.

CROSSREFS

Cf. A034035-A034042.

Sequence in context: A137000 A073634 A065554 * A138759 A345925 A098934

Adjacent sequences: A034039 A034040 A034041 * A034043 A034044 A034045

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Definition corrected by N. J. A. Sloane, Apr 30 2015

STATUS

approved