A057904 Positive integers that are not the sum of exactly three positive cubes.

1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 63, 64, 65, 67, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 82, 83, 84

Offset

1,2

Comments

A025456(a(n)) = 0. [From Reinhard Zumkeller, Apr 23 2009]

Links

T. D. Noe, Table of n, a(n) for n=1..1000

Eric Weisstein's World of Mathematics, Cubic Number.

Mathematica

Select[Range[100], Count[ PowersRepresentations[#, 3, 3], pr_List /; FreeQ[pr, 0]] == 0 &] (* Jean-François Alcover, Oct 31 2012 *)

Crossrefs

Cf. A003072 (Complement)

Sequence in context: A183301 A308065 A047318 * A188397 A027925 A247419

Adjacent sequences: A057901 A057902 A057903 * A057905 A057906 A057907

Keyword

nonn

Author

Eric W. Weisstein

Status

approved