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A022549
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Sum of a square and a nonnegative cube.
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13
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0, 1, 2, 4, 5, 8, 9, 10, 12, 16, 17, 24, 25, 26, 27, 28, 31, 33, 36, 37, 43, 44, 49, 50, 52, 57, 63, 64, 65, 68, 72, 73, 76, 80, 81, 82, 89, 91, 100, 101, 108, 113, 121, 122, 125, 126, 127, 128, 129, 134, 141, 144, 145
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| It appears that there are no modular constraints on this sequence; i.e., every residue class of every integer has representatives here. [From Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Dec 03 2009]
Complement of A022550; A045634(a(n))>0; A002760 and A179509 are a subsequences. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 17 2010]
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LINKS
| R. Zumkeller, Table of n, a(n) for n = 1..10000 [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 17 2010]
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MATHEMATICA
| q=30; imax=q^2; Select[Union[Flatten[Table[x^2+y^3, {y, 0, q^(2/3)}, {x, 0, q}]]], #<=imax&] (* From Vladimir Joseph Stephan Orlovsky, Apr 20 2011 *)
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CROSSREFS
| Cf. A055394, A045634, A055393, A123291, A169618, A123364, A111925. [From Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Dec 03 2009]
Sequence in context: A131615 A166110 A087815 * A045704 A169612 A084581
Adjacent sequences: A022546 A022547 A022548 * A022550 A022551 A022552
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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