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A186835 Number of (n+2)X6 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards. 1
74088, 1075071, 15478835, 209888936, 1919555447, 17494747887, 156721188699, 1078797163411, 7406777253003, 50517478604280, 286738174613422, 1624495522791359, 9174202859579047, 45367559809783120, 224059718533213551 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A186840
LINKS
EXAMPLE
Some solutions for 4X6
..0..0..0..0..1..1....0..0..0..1..0..0....0..0..0..0..0..1....0..0..1..0..0..1
..0..1..0..1..1..0....0..0..0..1..1..1....0..1..0..0..1..1....0..0..0..1..1..1
..0..1..1..0..1..0....0..0..1..0..0..1....0..1..1..0..1..0....0..1..1..0..0..1
..0..1..0..0..1..1....0..1..1..0..0..1....0..0..0..1..1..0....0..1..0..0..1..1
CROSSREFS
Sequence in context: A172949 A172703 A256731 * A239587 A122065 A079543
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2011
STATUS
approved

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Last modified July 14 00:54 EDT 2024. Contains 374290 sequences. (Running on oeis4.)