A186670 Total number of n-digit numbers requiring 12 positive biquadrates in their representation as sum of biquadrates.

0, 6, 62, 656, 6402, 60411, 600390, 6000430, 60000450, 600000451, 6000000424

Offset

1,2

Comments

A102831(n) + A186650(n) + A186652(n) + A186654(n) + A186656(n) + A186658(n) + A186660(n) + A186662(n) + A186664(n) + A186666(n) + A186668(n) + a(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) = A186669(n) - A186669(n-1).

Crossrefs

Cf. A003346, A186669.

Sequence in context: A198965 A342959 A144063 * A190726 A121251 A352071

Adjacent sequences: A186667 A186668 A186669 * A186671 A186672 A186673

Keyword

nonn,base,more

Author

Martin Renner, Feb 25 2011

Extensions

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

Status

approved