A181405 Total number of n-digit numbers requiring 8 positive cubes in their representation as sum of cubes.

0, 3, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

1,2

Comments

Arthur Wieferich proved that only 15 integers require eight cubes, cf. A018889.

A181354(n) + A181376(n) + A181378(n) + A181380(n) + A181384(n) + A181401(n) + A181403(n) + a(n) + A171386(n) = A052268(n)

Links

Table of n, a(n) for n=1..83.

Eric Weisstein's World of Mathematics, Waring's Problem.

Formula

a(n) = A181404(n) - A181404(n-1).

Crossrefs

Cf. A018889, A181404.

Sequence in context: A212814 A101710 A088799 * A354568 A072117 A162853

Adjacent sequences: A181402 A181403 A181404 * A181406 A181407 A181408

Keyword

nonn,base

Author

Martin Renner, Jan 28 2011

Status

approved