A253161 - OEIS

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A253161

Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally

3844, 46752, 555842, 7252320, 92998506, 1190692584, 15179218714, 194198939906, 2482220834294, 31740256495626, 405683545431502, 5186473593590730, 66301707444606534, 847604837440730462, 10835407210226372002

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

OFFSET

1,1

COMMENTS

Column 3 of A253164

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A061404 A234827 A253291 * A185773 A031560 A180505

Adjacent sequences: A253158 A253159 A253160 * A253162 A253163 A253164

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 28 2014

STATUS

approved