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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A032124 "BIK" (reversible, indistinct, unlabeled) transform of 2,2,2,2... 0
2, 5, 12, 33, 90, 261, 756, 2241, 6642, 19845, 59292, 177633, 532170, 1595781, 4785156, 14353281, 43053282, 129153285, 387440172, 1162300833, 3486843450, 10460471301, 31381236756, 94143533121, 282430067922 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

C. G. Bower, Transforms (2)

FORMULA

(1/6)*{(5-(-1)^n)*3^[n/2] + 2*3^n}. - R. Stephan, May 11 2004

CROSSREFS

Sequence in context: A010843 A084075 A000560 * A000669 A191769 A004114

Adjacent sequences:  A032121 A032122 A032123 * A032125 A032126 A032127

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net)

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 03:59 EST 2012. Contains 205694 sequences.