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A186797 Number of (n+2)X(n+2) binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock 0
512, 59907, 26628581, 44618824642, 281222068231208, 6674101867860962707 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A186806
LINKS
EXAMPLE
Some solutions for 4X4
..1..0..1..1....0..1..0..0....0..1..0..1....0..0..0..1....1..1..1..1
..1..1..0..1....1..0..0..0....0..0..1..1....1..0..1..1....0..1..0..1
..1..0..0..0....1..1..1..1....0..0..1..1....1..0..1..1....1..0..0..0
..1..1..0..1....1..0..0..0....1..1..0..0....1..0..1..0....0..1..1..0
CROSSREFS
Sequence in context: A250567 A035753 A107549 * A183815 A013701 A187461
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2011
STATUS
approved

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Last modified April 17 02:36 EDT 2024. Contains 371756 sequences. (Running on oeis4.)