Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A083421
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A083421 a(n)=2*5^n-2^n. +0
3
1, 8, 46, 242, 1234, 6218, 31186, 156122, 780994, 3905738, 19530226, 97654202, 488277154, 2441398058, 12207014866, 61035123482, 305175715714, 1525878775178, 7629394269106, 38146972131962, 190734862232674 (list; graph; listen)
OFFSET

0,2

COMMENT

Third binomial transform of A014551(n+1)

FORMULA

G.f.: (1+x)/((1-2x)(1-5x)); e.g.f.: 2exp(5x)-exp(2x).

CROSSREFS

Sequence in context: A026867 A026885 A052244 this_sequence A113992 A037070 A141788

Adjacent sequences: A083418 A083419 A083420 this_sequence A083422 A083423 A083424

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 29 2003

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 | The OEIS Foundation | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified March 19 13:18 EDT 2010. Contains 173632 sequences.


AT&T Labs Research