Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A101657
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A101657 a(n)=Product{k=0..n, 1+2^A101650(k)}/2. +0
1
1, 2, 6, 12, 60, 180, 900, 1800, 3600, 18000, 54000, 162000, 486000, 2430000, 4860000, 9720000, 29160000, 58320000, 116640000, 583200000, 1749600000, 5248800000, 10497600000, 31492800000, 62985600000, 188956800000 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A139315 A014767 A002319 this_sequence A104371 A104350 A072489

Adjacent sequences: A101654 A101655 A101656 this_sequence A101658 A101659 A101660

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Dec 10 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 November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.