A196728 - OEIS

A196728

Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,4,0,3 for x=0,1,2,3,4

13, 890, 55431, 2810070, 155884161, 8480784814, 466328648058, 25627044432018, 1401061856163452, 76824706430678661, 4214277934317634634, 230987804774562016288, 12662004308972053192420, 694169878513382740535063

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OFFSET

1,1

COMMENTS

Every 0 is next to 0 2's, every 1 is next to 1 1's, every 2 is next to 2 4's, every 3 is next to 3 0's, every 4 is next to 4 3's

Column 7 of A196729

LINKS

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

EXAMPLE

Some solutions for n=4

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

..0..3..1..0..0..0..3....0..0..0..0..0..0..3....0..3..3..0..0..0..0

..0..0..0..3..0..0..0....0..0..0..3..1..0..0....0..0..0..0..0..3..1

..0..0..0..1..1..0..0....0..3..0..0..1..0..0....0..0..0..1..1..0..1

CROSSREFS

Sequence in context: A013539 A201255 A196695 * A197068 A337575 A274544

Adjacent sequences: A196725 A196726 A196727 * A196729 A196730 A196731

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 05 2011

STATUS

approved