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A186836 Number of (n+2)X7 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards. 0
324576, 6019798, 111211414, 1919555447, 21242244160, 235234097572, 2571152951156, 20663923742904, 166164319255080 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A186840
LINKS
EXAMPLE
Some solutions for 4X7
..0..0..0..0..0..1..0....0..0..0..0..0..0..0....0..0..0..0..1..1..0
..0..0..0..0..0..1..0....0..0..1..1..1..0..0....0..0..0..0..0..1..0
..0..0..1..0..0..1..0....0..0..0..0..1..1..1....0..0..1..0..0..1..1
..0..0..0..1..1..1..1....0..0..1..0..0..1..0....0..0..1..0..1..1..1
CROSSREFS
Sequence in context: A114667 A233978 A263154 * A237223 A250910 A015360
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2011
STATUS
approved

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Last modified July 25 09:25 EDT 2024. Contains 374587 sequences. (Running on oeis4.)