A023051 Numbers that are the sum of two positive cubes in at least four ways (all solutions).

6963472309248, 12625136269928, 21131226514944, 26059452841000, 55707778473984, 74213505639000, 95773976104625, 101001090159424, 159380205560856, 169049812119552, 174396242861568, 188013752349696

Offset

1,1

References

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

Links

Uwe Hollerbach, Table of n, a(n) for n=1..16939

Uwe Hollerbach, Taxi, Taxi! [Original link, broken]

Uwe Hollerbach, Taxi, Taxi! [Replacement link to Wayback Machine]

Uwe Hollerbach, Taxi! Taxi! [Cached copy from Wayback Machine, html version of top page only]

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

Crossrefs

Cf. A001235, A003826, A011541, A018787, A023050, A025295, A051167, A343968, A345865.

Sequence in context: A378474 A295353 A210588 * A345865 A003826 A127344

Adjacent sequences: A023048 A023049 A023050 * A023052 A023053 A023054

Keyword

nonn

Author

David W. Wilson (revised Oct 15 1997)

Extensions

b-file extended by Ray Chandler, Jan 19 2009

Status

approved