A186662 Total number of n-digit numbers requiring 8 positive biquadrates in their representation as sum of biquadrates.

1, 5, 77, 975, 9457, 83959, 700406, 6220793, 60225898, 600223995, 6000225272

Offset

1,2

Comments

A102831(n) + A186650(n) + A186652(n) + A186654(n) + A186656(n) + A186658(n) + A186660(n) + a(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) = A186661(n) - A186661(n-1).

Crossrefs

Cf. A003342, A186661.

Sequence in context: A331000 A039753 A277533 * A186660 A287041 A360351

Adjacent sequences: A186659 A186660 A186661 * A186663 A186664 A186665

Keyword

nonn,base,more

Author

Martin Renner, Feb 25 2011

Extensions

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

Status

approved