Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A093833
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A093833 3^n-Jacobsthal(n). +0
2
1, 2, 8, 24, 76, 232, 708, 2144, 6476, 19512, 58708, 176464, 530076, 1591592, 4777508, 14337984, 43024876, 129096472, 387333108, 1162086704, 3486434876, 10459654152, 31379661508, 94140382624, 282423944076, 847277424632 (list; graph; listen)
OFFSET

0,2

COMMENT

Binomial transform of A052992. Binomial transform is A093834. Partial sums are A004054. Sums of consecutive pairs yield A053581.

FORMULA

G.f.: (1-x)^2/((1+x)(1-2x)(1-3x)); a(n)=3^n-2^n/3+(-1)^n/3; a(n)=3^n-A001045(n).

CROSSREFS

Adjacent sequences: A093830 A093831 A093832 this_sequence A093834 A093835 A093836

Sequence in context: A066973 A130495 A026070 this_sequence A006952 A034741 A085449

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 17 2004

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


AT&T Labs Research