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

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified November 21 17:44 EST 2017. Contains 295004 sequences.