A175367 A175366(n^2).

1, 7, 27, 57, 93, 125, 251, 275, 341, 493, 613, 637, 847, 991, 1095, 1317, 1521, 1713, 1785, 2079, 2279, 2555, 2747, 2969, 3329, 3593, 3793, 4051, 4507, 4747, 5155, 5419, 5749, 6333, 6693, 6957, 7317, 7875, 8211, 8751, 9191, 9431, 10133, 10517, 11045

Offset

0,2

Comments

Number of integer triples (x,y,z) satisfying |x|^3+|y|^3+|z|^3 <= n^2, -n <= x,y,z <= n. If the cubes on the left hand side are replaced by squares, A000605 results.

Links

Table of n, a(n) for n=0..44.

Crossrefs

Sequence in context: A015873 A344721 A309335 * A022271 A269449 A265900

Adjacent sequences: A175364 A175365 A175366 * A175368 A175369 A175370

Keyword

nonn

Author

R. J. Mathar, Apr 24 2010

Status

approved