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A069395
Number of n X 20 binary arrays with a path of adjacent 1's from top row to bottom row.
93
1048575, 1096024843375, 1117982939085627425, 1092719640470296684383473
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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: A075977 A011570 A022536 * A223603 A223696 A069281
Adjacent sequences: A069392 A069393 A069394 * A069396 A069397 A069398
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 22 2002
STATUS
approved

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Last modified September 29 21:11 EDT 2024. Contains 376324 sequences.
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