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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084131 a(n)=10a(n-1)-17a(n-2), a(0)=0,a(1)=5. 1
1, 5, 33, 245, 1889, 14725, 115137, 901045, 7053121, 55213445, 432231393, 3383685365, 26488919969, 207366548485, 1623353845377, 12708307129525, 99486055923841, 778819338036485, 6096930429659553, 47729375549975285 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A084130.

FORMULA

a(n)=(5+sqrt(8))^n/2+(5-sqrt(8))^n/2; G.f.: (1-5x)/(1-10x+17x^2); E.g.f.: exp(5x)cosh(sqrt(8)x).

CROSSREFS

Sequence in context: A118803 A093427 A142989 * A084771 A153398 A034015

Adjacent sequences:  A084128 A084129 A084130 * A084132 A084133 A084134

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 16 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:56 EST 2012. Contains 205860 sequences.