A196944 - OEIS

A196944

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

1, 11, 210, 18060, 5039158, 4998342821, 17331168379114, 210721221635883326

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

OFFSET

1,2

COMMENTS

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

Diagonal of A196950

LINKS

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved