Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A116530
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A116530 Each term is three times the previous term. +0
1
20, 60, 180, 540, 1620, 4860, 14580, 43740, 131220, 393660, 1180980, 3542940, 10628820, 31886460, 95659380, 286978140, 860934420, 2582803260, 7748409780, 23245229340, 69735688020, 209207064060, 627621192180, 1882863576540 (list; graph; listen)
OFFSET

1,1

LINKS

Tanya Khovanova, Recursive Sequences

FORMULA

a(n)=10*A008776(n+1).

MATHEMATICA

Table[4*5*3^(n - 1), {n, 24}] (* Robert G. Wilson v *)

CROSSREFS

Sequence in context: A124713 A126374 A078184 this_sequence A041780 A041782 A041784

Adjacent sequences: A116527 A116528 A116529 this_sequence A116531 A116532 A116533

KEYWORD

nonn

AUTHOR

Ben Gregson (mahishimi(AT)hotmail.com), Mar 26 2006

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Apr 18 2006

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 November 18 20:14 EST 2008. Contains 147244 sequences.


AT&T Labs Research