Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A131723
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A131723 a(2n)=1-n^2, a(2n+1)=n(n+1). +0
2
0, 2, -3, 6, -8, 12, -15, 20, -24, 30, -35, 42, -48, 56, -63, 72, -80, 90, -99, 110, -120, 132 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A086552 A098393 A103567 this_sequence A035106 A122378 A111242

Adjacent sequences: A131720 A131721 A131722 this_sequence A131724 A131725 A131726

KEYWORD

sign

AUTHOR

Paul Curtz (bpcrtz(AT)free.fr), Sep 16 2007

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 December 3 01:16 EST 2008. Contains 151161 sequences.

AT&T Labs Research

Legal Notice
© 2007 AT&T Knowledge Ventures. All Rights Reserved.