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!)
A137261 G.f.: (5764801*x^8-5764801*x^7+28812*x^4-28812*x^3+840*x-1200)/(x-1). 0
1200, 360, 360, 29172, 360, 360, 360, 5765161, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The expansion here is simpler than that in the reference on page 192.
LINKS
Fan Chung, R. L. Graham, Primitive juggling sequences, Am. Math. Monthly 115 (3) (2008) 185-194
FORMULA
f(x)=(1 - 7*x + 12*x^4 - 84*x^5 + 120*x^7 - 1200x^8)/(1 - 7*x); a(n) = 7^(n+10*coefficient expansion(x^7*f(1/x))
MATHEMATICA
f[x_] = (1 - 7*x + 12*x^4 - 84*x^5 + 120*x^7 - 1200x^8)/(1 - 7*x); p[x] = ExpandAll[x^7*f[1/x]]; Table[ SeriesCoefficient[Series[p[x]*7^(n + 1), {x, 0, 30}], n], {n, 0, 30}]
CROSSREFS
Sequence in context: A250379 A190833 A351676 * A252531 A043408 A234917
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Mar 11 2008
EXTENSIONS
Edited by N. J. A. Sloane, Mar 16 2008
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 March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)