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A196987 Number of nX6 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, 17, 242, 2499, 31791, 389518, 4743311, 58038517, 713190410, 8761030047, 107458130741, 1318534640744, 16183672145693, 198628472994711, 2437691980502762, 29916664089221985, 367160436509970605 (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 6 of A196989

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

..1..0..1..0..0..0....0..4..0..1..1..0....0..1..0..0..1..1....0..1..3..1..0..0

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

CROSSREFS

Sequence in context: A251769 A290340 A103772 * A051560 A259347 A324358

Adjacent sequences:  A196984 A196985 A196986 * A196988 A196989 A196990

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 08 2011

STATUS

approved

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Last modified September 22 21:06 EDT 2020. Contains 337291 sequences. (Running on oeis4.)