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Search: id:A140339
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A140339 Half the number of n X n binary matrices differing in at most four positions between adjacent rows and at most four positions between adjacent columns. +0
1
1, 8, 256, 32768, 13213313, 11522939359, 14149679017875 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A010044 A024290 A140338 this_sequence A103488 A041487 A034988

Adjacent sequences: A140336 A140337 A140338 this_sequence A140340 A140341 A140342

KEYWORD

nonn

AUTHOR

Ron Hardin (rhh(AT)cadence.com), May 28 2008

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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