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A060428 Numbers of form x^2 + xy + y^2 (with repetitions if more than one representation is possible). +0
2
1, 3, 4, 7, 9, 12, 13, 16, 19, 21, 25, 27, 28, 31, 36, 37, 39, 43, 48, 49, 49, 52, 57, 61, 63, 64, 67, 73, 75, 76, 79, 81, 84, 91, 91, 93, 97, 100, 103, 108, 109, 111, 112, 117, 121, 124, 127, 129, 133, 133, 139, 144, 147, 147, 148, 151, 156, 157, 163, 169, 169, 171 (list; graph; listen)
OFFSET

1,2

CROSSREFS

See A003136, which is the main entry for these numbers.

Sequence in context: A032729 A035270 A120451 this_sequence A035238 A003136 A034022

Adjacent sequences: A060425 A060426 A060427 this_sequence A060429 A060430 A060431

KEYWORD

nonn

AUTHOR

Anton Sherwood (bronto(AT)pobox.com), Apr 05 2001

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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