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A003826 Numbers that are the sum of two cubes in at least four ways (primitive solutions). 6

%I #33 Jul 27 2021 04:47:51

%S 6963472309248,12625136269928,21131226514944,26059452841000,

%T 74213505639000,95773976104625,159380205560856,174396242861568,

%U 300656502205416,376890885439488,521932420691227,573880096718136

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

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

%H Uwe Hollerbach, <a href="/A003826/b003826.txt">Table of n, a(n) for n = 1..664</a>

%H Uwe Hollerbach, <a href="http://www.korgwal.com/ramanujan/">Taxi, Taxi!</a> [Original link, broken]

%H Uwe Hollerbach, <a href="http://web.archive.org/web/20120203221114/http://www.korgwal.com/ramanujan">Taxi, Taxi!</a> [Replacement link to Wayback Machine]

%H Uwe Hollerbach, <a href="/A003825/a003825.html">Taxi! Taxi!</a> [Cached copy from Wayback Machine, html version of top page only]

%H E. Rosenstiel et al., <a href="http://www.cix.co.uk/~rosenstiel/cubes/welcome.htm">The Four Least Solutions ...</a>, Instit. of Mathem. and Its Applic. Bull. Jul 27 (pp. 155-157) 1991

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CubicNumber.html">Cubic Number</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/DiophantineEquation3rdPowers.html">Diophantine Equation--3rd Powers</a>

%H David W. Wilson, <a href="https://cs.uwaterloo.ca/journals/JIS/wilson10.html">The Fifth Taxicab Number is 48988659276962496</a>, J. Integer Sequences, Vol. 2, 1999, #99.1.9.

%Y Cf. A011541, A023050, A023051, A001235.

%K nonn

%O 1,1

%A _N. J. A. Sloane_

%E More terms from _David W. Wilson_, Oct 15 1997

%E b-file extended by _Ray Chandler_, Jan 19 2009

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)