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 A186684 Total number of positive integers below 10^n requiring 19 positive biquadrates in their representation as sum of biquadrates. 20
 0, 1, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS A114322(n) + A186649(n) + A186651(n) + A186653(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) + a(n) = A002283(n) REFERENCES J.-M. Deshouillers, K. Kawada and T. D. Wooley, On sums of sixteen biquadrates, Mem. Soc. Math. Fr. 100 (2005), pp. 120. LINKS Weisstein, Eric W.: MathWorld -- Waring's Problem. J.-M. Deshouillers, F. Hennecart and B. Landreau, Waring's Problem for sixteen biquadrates - numerical results, Journal de ThÃ©orie des Nombres de Bordeaux 12 (2000), pp. 411-422. L. E. Dickson, Recent progress on Waring's theorem and its generalizations, Bull. Amer. Math. Soc. 39:10 (1933), pp. 701-727. Index entries for linear recurrences with constant coefficients, signature (1). FORMULA a(n) = 7 for n >= 3. - Nathaniel Johnston, May 09 2011 CROSSREFS Cf. A046050, A010727. Sequence in context: A031182 A106705 A010727 * A255910 A108689 A261225 Adjacent sequences:  A186681 A186682 A186683 * A186685 A186686 A186687 KEYWORD nonn,easy AUTHOR Martin Renner, Feb 25 2011 EXTENSIONS a(5)-a(6) from Lars Blomberg, May 08 2011 Terms after a(6) from Nathaniel Johnston, May 09 2011 STATUS approved

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Last modified December 9 19:51 EST 2019. Contains 329879 sequences. (Running on oeis4.)