Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A109459
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A109459 Number of inequivalent Krom functions on n variables (or 2SAT instances) under permuting and complementing variables. +0
2
2, 3, 6, 14, 45, 196, 1360, 15631 (list; graph; listen)
OFFSET

0,1
CROSSREFS

See A109457 for definitions and references.

Sequence in context: A056569 A094468 A091285 this_sequence A118986 A091138 A090983

Adjacent sequences: A109456 A109457 A109458 this_sequence A109460 A109461 A109462

KEYWORD

nonn,hard

AUTHOR

D. E. Knuth, Aug 24 2005

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 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research

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