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A186653 Total number of positive integers below 10^n requiring 4 positive biquadrates in their representation as sum of biquadrates. 19
1, 7, 48, 346, 3066, 27754, 260724, 2516312, 24744689, 245221669, 2442288495 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A114322(n) + A186649(n) + A186651(n) + a(n) + A186655(n) + A186657(n) + A186659(n) + A186661(n) + A186663(n) + A186665(n) + A186667(n) + A186669(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. A003338, A186654.

Sequence in context: A004187 A180167 A341425 * A231378 A024092 A163713

Adjacent sequences:  A186650 A186651 A186652 * A186654 A186655 A186656

KEYWORD

nonn

AUTHOR

Martin Renner, Feb 25 2011

EXTENSIONS

a(5)-a(9) from Lars Blomberg, May 08 2011

a(10)-a(11) from Giovanni Resta, Apr 26 2016

STATUS

approved

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Last modified June 18 17:20 EDT 2021. Contains 345120 sequences. (Running on oeis4.)