[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A186682 Total number of positive integers below 10^n requiring 18 positive biquadrates in their representation as sum of biquadrates. 19
0, 2, 19, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24 (list; graph; refs; listen; history; text; internal format)
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) + A186669(n) + A186671(n) + A186673(n) + A186675(n) + A186677(n) + A186680(n) + a(n) + A186684(n) = A002283(n)
a(n) = 24 for n >= 4. - Nathaniel Johnston, May 09 2011
Continued fraction expansion of (185-sqrt(145))/355. - Bruno Berselli, May 10 2011
LINKS
Table of n, a(n) for n=1..65.
Eric Weisstein's World of Mathematics, Waring's Problem.
Index entries for linear recurrences with constant coefficients, signature (1).
FORMULA
G.f.: x^2*(2+17*x+5*x^2)/(1-x). - Bruno Berselli, May 10 2011
MATHEMATICA
PadRight[{0, 2, 19}, 100, 24] (* Paolo Xausa, Jul 30 2024 *)
CROSSREFS
Cf. A046049.
Sequence in context: A018696 A175451 A004023 * A031030 A083689 A102617
Adjacent sequences: A186679 A186680 A186681 * A186683 A186684 A186685
KEYWORD
nonn
AUTHOR
Martin Renner, Feb 25 2011
EXTENSIONS
a(5)-a(6) from Lars Blomberg, May 08 2011
a(7) from Charles R Greathouse IV, May 08 2011
Terms after a(7) from Nathaniel Johnston, May 09 2011
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 30 23:09 EDT 2024. Contains 375550 sequences. (Running on oeis4.)