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A022549 Sum of a square and a nonnegative cube. 16
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; text; internal format)
OFFSET

1,3

COMMENTS

It appears that there are no modular constraints on this sequence; i.e., every residue class of every integer has representatives here. - Franklin T. Adams-Watters, Dec 03 2009

A045634(a(n)) > 0. - Reinhard Zumkeller, Jul 17 2010

LINKS

R. Zumkeller, Table of n, a(n) for n = 1..10000 - Reinhard Zumkeller, Jul 17 2010

MATHEMATICA

q=30; imax=q^2; Select[Union[Flatten[Table[x^2+y^3, {y, 0, q^(2/3)}, {x, 0, q}]]], #<=imax&] (* Vladimir Joseph Stephan Orlovsky, Apr 20 2011 *)

CROSSREFS

Complement of A022550; A002760 and A179509 are subsequences.

Cf. A055394, A045634, A055393, A123291, A169618, A123364, A111925.

Sequence in context: A166110 A087815 A248893 * A045704 A169612 A084581

Adjacent sequences:  A022546 A022547 A022548 * A022550 A022551 A022552

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified January 17 05:26 EST 2019. Contains 319207 sequences. (Running on oeis4.)