A191352 Numbers n with property that 9*n is a sum of two distinct positive cubes.

1, 8, 14, 21, 27, 39, 52, 57, 64, 84, 95, 105, 112, 125, 148, 155, 168, 186, 195, 216, 245, 258, 259, 273, 301, 305, 312, 343, 378, 392, 399, 416, 456, 469, 512, 546, 549, 553, 567, 584, 603, 651, 657, 672, 729, 760, 763, 776, 790, 819, 840, 889, 896

Offset

1,2

Comments

9*n are terms in A024670.

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10224

Example

9*n=a^3+b^3, {n,a,b}={{1,1,2},{8,2,4},{14,1,5},{21,4,5}...}.

Mathematica

Union[#/9&/@Select[Total/@(Subsets[Range[20], {2}]^3), Divisible[ #, 9]&]] (* Harvey P. Dale, Jun 10 2011 *)

Crossrefs

Cf. A024670 Numbers that are sums of 2 distinct positive cubes.

Sequence in context: A363031 A108058 A322410 * A287177 A063216 A238290

Adjacent sequences: A191349 A191350 A191351 * A191353 A191354 A191355

Keyword

nonn

Author

Zak Seidov, May 31 2011

Extensions

Corrected by Harvey P. Dale, Jun 10 2011

Status

approved