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A185611 Number of (n+1)X3 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum 1
171, 2121, 24993, 313105, 3959747, 50512903, 646053371, 8287005157, 106415024441, 1368098434721, 17598078326551, 226486740265787, 2915699882756875, 37545244543350913, 483541481413780309 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A185614

LINKS

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

EXAMPLE

Some solutions for 5X3

..0..2..0....0..2..0....0..0..0....0..2..1....0..0..2....0..2..1....0..2..0

..2..0..0....1..1..1....1..0..1....1..2..2....0..1..0....2..2..1....1..0..1

..2..0..2....1..2..1....1..1..1....0..2..1....0..0..2....1..0..2....2..2..2

..0..2..1....1..1..1....1..1..1....2..2..1....1..0..2....2..1..2....0..1..0

..1..2..0....0..1..0....0..0..0....1..1..2....0..0..2....1..0..2....2..0..2

CROSSREFS

Sequence in context: A199902 A251223 A186868 * A195279 A016058 A332418

Adjacent sequences:  A185608 A185609 A185610 * A185612 A185613 A185614

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified June 25 08:25 EDT 2022. Contains 354835 sequences. (Running on oeis4.)