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Search: id:A069429
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A069429 Half the number of 3 X n binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row. +0
92
3, 16, 84, 440, 2304, 12064, 63168, 330752, 1731840, 9068032, 47480832, 248612864, 1301753856, 6816071680, 35689414656, 186872201216, 978475548672, 5123364487168, 26826284728320, 140464250421248 (list; graph; listen)
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: A041707 A037584 A030983 this_sequence A026131 A026160 A025187

Adjacent sequences: A069426 A069427 A069428 this_sequence A069430 A069431 A069432

KEYWORD

nonn

AUTHOR

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

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.


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