login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061706 G.f.: x^2*(x-1)^8/(4*x^9+x^8-79*x^7+166*x^6-225*x^5+206*x^4-129*x^3+50*x^2-11*x+1). 0
0, 0, 1, 3, 11, 44, 185, 805, 3552, 15671, 68827, 301108, 1314553, 5735237, 25024104, 109216135, 476775195, 2081568940, 9088283129, 39679791093, 173240442512, 756351086215, 3302134987931, 14416689863220, 62941426366169 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

R. P. Stanley, Enumerative Combinatorics I, 4.7.19.

LINKS

Table of n, a(n) for n=0..24.

FORMULA

a(n) = 11*a(n - 1) - 50*a(n - 2) + 129*a(n - 3) - 206*a(n - 4) + 225*a(n - 5) - 166*a(n - 6) + 79*a(n - 7) - a(n - 8) - 4*a(n - 9) for n >= 11.

CROSSREFS

Cf. A001169.

Sequence in context: A271931 A151105 A127632 * A167012 A167013 A121220

Adjacent sequences:  A061703 A061704 A061705 * A061707 A061708 A061709

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Jun 18 2001

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified February 21 04:43 EST 2018. Contains 299389 sequences. (Running on oeis4.)