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A187724 Number of (n+1)X5 binary arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors 1
391, 2804, 20684, 161571, 1252304, 9823368, 76931991, 603313744, 4730797071, 37100667206, 290947460647, 2281693532812, 17893663414565, 140326848073352, 1100482594455998, 8630285459242719, 67681077927288230, 530773701234315911 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A187729

LINKS

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

EXAMPLE

Some solutions for 3X5

..0..0..1..1..0....1..1..0..0..1....0..1..0..1..1....0..0..1..0..1

..0..1..0..1..1....1..1..0..1..1....0..1..1..0..0....0..1..1..1..1

..1..1..1..1..0....1..0..0..1..1....1..0..1..1..1....1..1..0..1..1

CROSSREFS

Sequence in context: A158004 A264448 A160184 * A035883 A235188 A248022

Adjacent sequences:  A187721 A187722 A187723 * A187725 A187726 A187727

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 13 2011

STATUS

approved

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Last modified February 24 20:33 EST 2020. Contains 332210 sequences. (Running on oeis4.)