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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A183188 a(n) = 3*a(n-1) + a(n-3) with a(0)=1, a(1)=2, a(2)=6. 1
1, 2, 6, 19, 59, 183, 568, 1763, 5472, 16984, 52715, 163617, 507835, 1576220, 4892277, 15184666, 47130218, 146282931, 454033459, 1409230595, 4373974716, 13575957607, 42137103416, 130785284964, 405931812499, 1259932540913, 3910582907703, 12137680535608 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..27.

Index entries for linear recurrences with constant coefficients, signature (3,0,1).

FORMULA

G.f.: ((1-x)/(1-3*x-x^3).

a(n) = A052541(n)-A051541(n-1). - R. J. Mathar, Dec 15 2011

CROSSREFS

Cf. A193723

Sequence in context: A037512 A111277 A014346 * A118364 A294500 A208481

Adjacent sequences:  A183185 A183186 A183187 * A183189 A183190 A183191

KEYWORD

easy,nonn

AUTHOR

Philippe Deléham, Dec 14 2011

EXTENSIONS

Corrected by R. J. Mathar, Dec 15 2011

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 November 30 04:28 EST 2021. Contains 349418 sequences. (Running on oeis4.)