Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A054361
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A054361 Number of polyominoes with n cells without holes that do not tile the plane. +0
5
0, 0, 0, 0, 0, 0, 3, 20, 198, 1390, 9474, 35488, 178448, 696371, 2721544, 10683110, 41334494, 155723774, 596182769, 2257379379, 8587521496, 32688629235, 124568505590 (list; graph; listen)
OFFSET

1,7

REFERENCES

Posting by Glenn C. Rhoads (rhoads(AT)paul.rutgers.edu) to rec.puzzles, Feb 17 2000.

LINKS

Joseph Myers, Polyomino tiling

EXAMPLE

a(7) = 3.

CROSSREFS

Cf. A000104, A054360.

Sequence in context: A108206 A120485 A087152 this_sequence A052595 A052590 A081209

Adjacent sequences: A054358 A054359 A054360 this_sequence A054362 A054363 A054364

KEYWORD

nonn,hard

AUTHOR

Joe Keane (jgk(AT)jgk.org)

EXTENSIONS

Corrected and extended by Joseph Myers (jsm(AT)polyomino.org.uk), May 05 2002

More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 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 | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified July 4 18:25 EDT 2008. Contains 140886 sequences.


AT&T Labs Research