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A069394 revision #8

A069394

Number of n X 19 binary arrays with a path of adjacent 1's from top row to bottom row.

524287, 273715645477, 138901692341235797, 67364511379527907595537

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

CROSSREFS

Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, 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: A075974 A011569 A022535 * A289480 A222530 A069280

Adjacent sequences: A069391 A069392 A069393 * A069395 A069396 A069397

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 22 2002

STATUS

editing