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A196988 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,4,1,0 for x=0,1,2,3,4 1
1, 31, 707, 11647, 242602, 4743311, 93411402, 1863379223, 37097158961, 737372275936, 14668565862312, 291924510277289, 5808427537351763, 115562866241227272, 2299357190745139049, 45750931870365018621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

Column 7 of A196989

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A006097 A000565 A014930 * A061252 A096049 A166488

Adjacent sequences:  A196985 A196986 A196987 * A196989 A196990 A196991

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 08 2011

STATUS

approved

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Last modified August 3 20:08 EDT 2020. Contains 336201 sequences. (Running on oeis4.)