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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A136297 a(n)=3a(n-1)-3a(n-2)+3a(n-3). 2
1, 3, 1, -3, -3, 3, 9, 9, 9, 27, 81, 189, 405, 891, 2025, 4617, 10449, 23571, 53217, 120285, 271917, 614547, 1388745, 3138345, 7092441, 16028523, 36223281, 81861597, 185000517, 418086603, 944843049, 2135270889, 4825543329, 10905346467, 24645222081, 55696256829, 125869143645 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (3, -3, 3).

FORMULA

O.g.f.: (-1+5*x^2)/(-1+3*x-3*x^2+3*x^3). a(n)=A052103(n+1)-5*A052103(n-1). - R. J. Mathar, Apr 04 2008

MATHEMATICA

LinearRecurrence[{3, -3, 3}, {1, 3, 1}, 40] (* Harvey P. Dale, Jun 22 2013 *)

CROSSREFS

Sequence in context: A194299 A029154 A211974 * A243339 A244965 A049996

Adjacent sequences:  A136294 A136295 A136296 * A136298 A136299 A136300

KEYWORD

sign,easy

AUTHOR

Paul Curtz, Mar 21 2008

EXTENSIONS

More terms from R. J. Mathar, Apr 04 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 26 01:08 EDT 2019. Contains 321479 sequences. (Running on oeis4.)