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A069450 Half the number of 5 X n binary arrays with no path of adjacent 1's or adjacent 0's from top to bottom or side to side. 0
15, 1723, 95783, 3802615, 127780201, 3912171001 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..7.

CROSSREFS

Cf. 2 X n 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: A195891 A195521 A122184 * A205346 A208868 A070862

Adjacent sequences:  A069447 A069448 A069449 * A069451 A069452 A069453

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 22 2002

STATUS

approved

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Last modified November 27 04:53 EST 2021. Contains 349346 sequences. (Running on oeis4.)