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Search: id:A002480
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| A002480 |
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Numbers of form 2x^2 + 3y^2.
(Formerly M0683 N0252)
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+0
1
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| 0, 2, 3, 5, 8, 11, 12, 14, 18, 20, 21, 27, 29, 30, 32, 35, 44, 45, 48, 50, 53, 56, 59, 62, 66, 72, 75, 77, 80, 83, 84, 93, 98, 99, 101, 107, 108, 110, 116, 120, 125, 126, 128, 131, 140, 146, 147, 149, 155, 158, 162
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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L. Euler, (E388) Vollstaendige Anleitung zur Algebra, Zweiter Theil, reprinted in: Opera Omnia. Teubner, Leipzig, 1911, Series (1), Vol. 1, p. 425.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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L. Euler, Vollstaendige Anleitung zur Algebra, Zweiter Teil.
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CROSSREFS
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Sequence in context: A063178 A028891 A028890 this_sequence A070223 A117725 A106637
Adjacent sequences: A002477 A002478 A002479 this_sequence A002481 A002482 A002483
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein
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