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!)
A026024 Expansion of 1/((1-2x)(1-5x)(1-9x)(1-10x)). 0
1, 26, 443, 6280, 80481, 969126, 11196103, 125634740, 1380061661, 14917299826, 159239422563, 1683073423200, 17647253908441, 183823250672126, 1904399083525823, 19639540889107660, 201755613688828821 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (26, -233, 820, -900).

FORMULA

a(0)=1, a(1)=26, a(2)=443, a(3)=6280, a(n)=26*a(n-1)-233*a(n-2)+ 820*a(n-3)- 900*a(n-4) [From Harvey P. Dale, Jul 12 2011]

a(n) = -2^n/21 +25*5^n/12 -729*9^n/28 +25*10^n/1. R. J. Mathar, Jun 20 2013

MATHEMATICA

CoefficientList[Series[1/((1-2x)(1-5x)(1-9x)(1-10x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{26, -233, 820, -900}, {1, 26, 443, 6280}, 30] (* Harvey P. Dale, Jul 12 2011 *)

CROSSREFS

Sequence in context: A028062 A028047 A042304 * A026542 A028045 A288714

Adjacent sequences:  A026021 A026022 A026023 * A026025 A026026 A026027

KEYWORD

nonn

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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 11 20:13 EDT 2022. Contains 356067 sequences. (Running on oeis4.)