login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A025009 Expansion of 1/((1-x)(1-9x)(1-10x)(1-11x)). 0
1, 31, 632, 10682, 162183, 2297253, 31000054, 403684144, 5115788645, 63462153755, 773891110356, 9306180096486, 110619493115587, 1302189143870737, 15203564170082738, 176265669269562908 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..15.

FORMULA

a(n) = (36*11^(n+3) - 80*10^(n+3) + 45*9^(n+3) - 1)/720. [Yahia Kahloune, Jul 02 2013]

CROSSREFS

Sequence in context: A078891 A078914 A068147 * A028004 A025007 A024446

Adjacent sequences:  A025006 A025007 A025008 * A025010 A025011 A025012

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 17:37 EDT 2020. Contains 337969 sequences. (Running on oeis4.)