A003826 Numbers that are the sum of two cubes in at least four ways (primitive solutions).

6963472309248, 12625136269928, 21131226514944, 26059452841000, 74213505639000, 95773976104625, 159380205560856, 174396242861568, 300656502205416, 376890885439488, 521932420691227, 573880096718136

Offset

1,1

References

R. K. Guy, Unsolved Problems in Number Theory, D1.

Links

Uwe Hollerbach, Table of n, a(n) for n = 1..664

Uwe Hollerbach, Taxi, Taxi! [Original link, broken]; see also Archive.org backup and local cache [top page only]

E. Rosenstiel et al., The Four Least Solutions ..., Instit. of Mathem. and Its Applic. Bull. Jul 27 (pp. 155-157) 1991

Eric Weisstein's World of Mathematics, Cubic Number

Eric Weisstein's World of Mathematics, Diophantine Equation--3rd Powers

David W. Wilson, The Fifth Taxicab Number is 48988659276962496, J. Integer Sequences, Vol. 2, 1999, #99.1.9.

Crossrefs

Cf. A011541, A023050, A023051, A001235.

Sequence in context: A210588 A023051 A345865 * A127344 A186179 A058124

Adjacent sequences: A003823 A003824 A003825 * A003827 A003828 A003829

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from David W. Wilson, Oct 15 1997

b-file extended by Ray Chandler, Jan 19 2009

Status

approved