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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A186806

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

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

Adjacent sequences:  A186796 A186797 A186798 * A186800 A186801 A186802

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2011

STATUS

approved

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Last modified May 16 18:41 EDT 2022. Contains 353720 sequences. (Running on oeis4.)