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!)
A101552 C(n-3,3)+C(n-7,7)+...+C(n-(4*floor((n-4)/4)+3),4*floor((n-4)/4)+3). 3
0, 0, 0, 0, 0, 0, 1, 4, 10, 20, 35, 56, 84, 120, 166, 228, 322, 484, 785, 1352, 2396, 4248, 7405, 12592, 20856, 33728, 53524, 83912, 130956, 204968, 323665, 517356, 837206, 1368108, 2248479, 3700648, 6077900, 9938488, 16164330, 26154700, 42146078 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,8
LINKS
FORMULA
G.f.: x^6/((1-x)^4-x^8).
a(n) = sum{k=0..n, if(mod(k+1, 4)=0, C(n-k, k), 0)}.
a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4) + a(n-8). - G. C. Greubel, May 17 2016
MATHEMATICA
CoefficientList[Series[x^6/((1 - x)^4 - x^8) , {x, 0, 50}], x] (* G. C. Greubel, May 17 2016 *)
CROSSREFS
Sequence in context: A276643 A000292 A352669 * A352210 A038419 A301208
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Dec 06 2004
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.)