A185822 - OEIS

A185822

1/5 the number of nX6 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors

29, 49248, 35446376, 32995092992, 28043363244452

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

OFFSET

1,1

COMMENTS

Column 6 of A185825

LINKS

EXAMPLE

Some solutions for 4X6 with a(1,1)=0

..0..0..1..1..4..4....0..0..2..2..0..0....0..0..4..4..2..2....0..0..0..3..2..3

..0..1..0..2..2..4....0..1..0..0..0..1....0..1..0..4..1..2....0..1..0..3..2..3

..0..1..0..2..0..2....0..1..0..2..1..1....0..1..0..2..1..2....0..1..0..2..4..4

..0..0..0..2..0..2....0..0..0..2..4..4....0..0..0..2..3..3....0..0..0..2..4..4

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved