

A003327


Numbers that are the sum of 4 positive cubes in 1 or more way.


19



4, 11, 18, 25, 30, 32, 37, 44, 51, 56, 63, 67, 70, 74, 81, 82, 88, 89, 93, 100, 107, 108, 119, 126, 128, 130, 135, 137, 142, 144, 145, 149, 154, 156, 161, 163, 168, 180, 182, 187, 191, 193, 198, 200, 205, 206, 217, 219, 224, 226, 233, 240, 243, 245, 252, 254
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OFFSET

1,1


COMMENTS

It is conjectured that every number greater than 7373170279850 is in this sequence. [See the paper of the same name.  T. D. Noe, May 25 2017]  Charles R Greathouse IV, Jan 14 2017


LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000
JeanMarc Deshouillers, François Hennecart, Bernard Landreau, 7373170279850, Math. Comp. 69 (2000), pp. 421439. Appendix by I. Gusti Putu Purnaba.
Eric Weisstein's World of Mathematics, Cubic Number.


PROG

(PARI) list(lim)=my(v=List(), e=1+lim\1, x='x, t); t=sum(i=1, sqrtnint(e4, 3), x^i^3, O(x^e))^4; for(n=4, lim, if(polcoeff(t, n)>0, listput(v, n))); Vec(v) \\ Charles R Greathouse IV, Jan 14 2017


CROSSREFS

Cf. A025403, A057905 (complement)
Sequence in context: A325618 A043409 A030610 * A025403 A047703 A242679
Adjacent sequences: A003324 A003325 A003326 * A003328 A003329 A003330


KEYWORD

nonn


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Eric W. Weisstein


STATUS

approved



