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A186794 Half the number of (n+2)X9 binary arrays with each 3X3 subblock having a sum in 2..7 1
53808589, 23402344941, 10131963654512, 4391582264258067, 1903184045712789082, 824819184923132441809, 357466055151669297136736, 154921287528965130422293553, 67140931189826904910835734315 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A186796
LINKS
EXAMPLE
Some solutions for 4X9 with a(1,1)=0
..0..0..0..0..0..0..0..1..1....0..0..0..0..0..0..0..0..1
..0..0..1..0..0..1..1..1..0....0..0..1..0..1..1..1..1..0
..0..0..1..0..1..0..1..1..0....0..0..1..0..0..1..1..1..1
..0..0..0..0..0..1..1..0..0....0..0..0..0..0..0..0..0..0
CROSSREFS
Sequence in context: A186596 A205180 A216007 * A345719 A346360 A234794
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2011
STATUS
approved

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Last modified May 18 19:36 EDT 2024. Contains 372666 sequences. (Running on oeis4.)