A253162 - OEIS

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A253162

Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally

26784, 443362, 7252320, 135741428, 2461955138, 44789509812, 808045500430, 14674315377606, 265844130932752, 4822273171428216, 87389675007459160, 1584487801002237370, 28722425603939593796, 520728445103764345118

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

OFFSET

1,1

COMMENTS

Column 4 of A253164

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS