A186681 Total number of n-digit numbers requiring 17 positive biquadrates in their representation as sum of biquadrates.

0, 3, 30, 30, 2, 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, 0

Offset

1,2

Comments

A161905(n) + A186650(n) + A186652(n) + A186654(n) + A186656(n) + A186658(n) + A186660(n) + A186662(n) + A186664(n) + A186666(n) + A186668(n) + A186670(n) + A186672(n) + A186674(n) + A186676(n) + A186678(n) + a(n) + A186683(n) + A186685(n) = A052268(n)

a(n) = 0 for n >= 6. - Nathaniel Johnston, May 09 2011

Links

Table of n, a(n) for n=1..86.

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

Index entries for linear recurrences with constant coefficients, signature (1).

Formula

a(n) = A186680(n) - A186680(n-1).

Crossrefs

Cf. A046048, A099591, A186683, A186685.

Sequence in context: A072973 A154054 A118219 * A295430 A344430 A217395

Adjacent sequences: A186678 A186679 A186680 * A186682 A186683 A186684

Keyword

nonn,base,easy

Author

Martin Renner, Feb 25 2011

Status

approved