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A196211 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,0,1,2,4 for x=0,1,2,3,4 0
1, 9, 58, 2161, 173216, 33962624, 17831030743, 24799094512239 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

Diagonal of A196218

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A055423 A322207 A196293 * A196679 A276450 A276648

Adjacent sequences:  A196208 A196209 A196210 * A196212 A196213 A196214

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 29 2011

STATUS

approved

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Last modified October 21 11:25 EDT 2019. Contains 328295 sequences. (Running on oeis4.)