A267189 (Cubes of positive numbers) that are not the sum of three nonzero squares.

1, 8, 64, 343, 512, 3375, 4096, 12167, 21952, 29791, 32768, 59319, 103823, 166375, 216000, 250047, 262144, 357911, 493039, 658503, 778688, 857375, 1092727, 1367631, 1404928, 1685159, 1906624, 2048383, 2097152, 2460375, 2924207, 3442951, 3796416, 4019679, 4657463, 5359375, 6128487

Offset: 1

Author

N. J. A. Sloane, Jan 18 2016

Keywords

• nonn

Comments

This is the intersection of A004214 and A000578.

The original definition of A134739 was ambiguous - this is the second way it could have been interpreted. The other way, now the official definition of A134739, being "Cubes of (positive numbers that are not the sum of three nonzero squares)".

Links

• Chai Wah Wu, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000578, A004214, A134739.

Programs

PARI

is(n) = { my(a, b) ; a=1; while(a^2+1Altug Alkan, Jan 18 2016

Extensions

More terms from Altug Alkan, Jan 18 2016