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A020895
Cubefree sums of two nonzero cubes.
4
2, 7, 9, 19, 26, 28, 35, 37, 61, 63, 65, 91, 98, 117, 124, 126, 127, 133, 169, 215, 217, 218, 271, 279, 316, 331, 335, 341, 342, 370, 386, 387, 397, 407, 468, 469, 485, 511, 539, 547, 559, 602, 604, 631, 637, 657, 665, 721, 730, 737, 793, 817
OFFSET
1,1
LINKS
Jean-François Alcover, Table of n, a(n) for n = 1..501
Steven R. Finch, On a Generalized Fermat-Wiles Equation [broken link]
Steven R. Finch, On a Generalized Fermat-Wiles Equation [From the Wayback Machine]
MATHEMATICA
Reap[Do[If[Max[FactorInteger[n][[All, 2]] ] < 3, If[Reduce[a != 0 && b != 0 && n == a^3 + b^3, {a, b}, Integers] =!= False, Print[n]; Sow[n]]], {n, 2, 1000}]] [[2, 1]] (* Jean-François Alcover, Sep 07 2015 *)
CROSSREFS
Sequence in context: A361706 A293645 A293646 * A174247 A343963 A321322
KEYWORD
nonn
AUTHOR
EXTENSIONS
Set offset to 1, Joerg Arndt, Sep 07 2015
STATUS
approved