A186658 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A186658

Total number of n-digit numbers requiring 6 positive biquadrates in their representation as sum of biquadrates.

18

1, 6, 71, 877, 11437, 140179, 1567562, 16444269, 158993052, 1448222849, 12807964358

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

A102831(n) + A186650(n) + A186652(n) + A186654(n) + A186656(n) + a(n) + A186660(n) + A186662(n) + A186664(n) + A186666(n) + A186668(n) + A186670(n) + A186672(n) + A186674(n) + A186676(n) + A186678(n) + A186681(n) + A186683(n) + A186685(n) = A052268(n), for n>1.

LINKS

Table of n, a(n) for n=1..11.

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

FORMULA

a(n) = A186657(n) - A186657(n-1).

CROSSREFS

Cf. A003340, A186657.

Sequence in context: A213530 A023038 A092660 * A341967 A371366 A092085

Adjacent sequences: A186655 A186656 A186657 * A186659 A186660 A186661

KEYWORD

nonn,more,base

AUTHOR

Martin Renner, Feb 25 2011

EXTENSIONS

a(5)-a(11) from Giovanni Resta, Apr 29 2016

STATUS

approved