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A069438 Half the number of 12 X n binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row. 0
2047, 8341288, 33725176208, 135401306105052 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. 2 X n A000079, n X 1 A000225, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

Sequence in context: A022193 A069386 A069412 * A131952 A065341 A135976

Adjacent sequences:  A069435 A069436 A069437 * A069439 A069440 A069441

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Mar 22 2002.

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Last modified February 15 12:01 EST 2012. Contains 205782 sequences.