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A222304
Numbers n such that 2n is in A045980.
4
0, 1, 4, 8, 13, 14, 27, 28, 32, 36, 49, 62, 63, 64, 76, 104, 108, 109, 112, 125, 140, 148, 158, 171, 172, 185, 193, 216, 224, 234, 244, 252, 256, 260, 288, 301, 302, 343, 351, 364, 365, 378, 392, 427, 433, 468, 494, 496, 500, 504, 508, 512, 532, 536, 589, 603, 608, 652, 665, 666, 676, 679, 728, 729, 734, 756, 769, 832
OFFSET
1,3
COMMENTS
Numbers n such that 2n = x^3 + y^3 for some integers x, y. - Charles R Greathouse IV, Nov 29 2014
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
PROG
(PARI) T=thueinit('z^3+1);
is(n)=n==0 || #thue(T, 2*n)>0 \\ Charles R Greathouse IV, Nov 29 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 15 2013, based on a suggestion from Allan C. Wechsler.
STATUS
approved