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A186799
Number of (n+2)X4 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock
1
3984, 59907, 906615, 13730715, 207885695, 3147544633, 47657171957, 721577251158, 10925394777419, 165421364939032, 2504644302903332, 37922809664016571, 574189116011343334, 8693795217212932116
OFFSET
1,1
COMMENTS
Column 2 of A186806
LINKS
EXAMPLE
Some solutions for 6X4
..0..0..1..1....1..0..1..1....1..0..0..1....0..0..1..1....0..0..1..1
..1..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0....1..0..0..0
..1..0..0..0....1..1..0..0....1..1..0..0....1..1..0..0....1..0..0..0
..1..1..1..1....0..1..0..1....1..0..1..1....0..1..1..1....1..1..0..1
..1..0..1..1....1..0..0..0....0..0..1..0....0..0..0..1....1..1..1..1
..1..0..0..0....0..0..1..1....1..0..0..1....0..0..1..0....1..1..0..0
CROSSREFS
Sequence in context: A204493 A321053 A233648 * A203190 A229382 A159218
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2011
STATUS
approved