A186669 Total number of positive integers below 10^n requiring 12 positive biquadrates in their representation as sum of biquadrates.

0, 6, 68, 724, 7126, 67537, 667927, 6668357, 66668807, 666669258, 6666669682

Offset

1,2

Comments

A114322(n) + A186649(n) + A186651(n) + A186653(n) + A186655(n) + A186657(n) + A186659(n) + A186661(n) + A186663(n) + A186665(n) + A186667(n) + a(n) + A186671(n) + A186673(n) + A186675(n) + A186677(n) + A186680(n) + A186682(n) + A186684(n) = A002283(n).

Links

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

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

Crossrefs

Cf. A003346, A186670.

Sequence in context: A281051 A006737 A128869 * A258134 A256238 A359714

Adjacent sequences: A186666 A186667 A186668 * A186670 A186671 A186672

Keyword

nonn,more

Author

Martin Renner, Feb 25 2011

Extensions

a(5)-a(7) from Lars Blomberg, May 08 2011

a(8)-a(9) from Hiroaki Yamanouchi, Oct 13 2014

a(10)-a(11) from Giovanni Resta, Apr 29 2016

Status

approved