A196683 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,2,3 for x=0,1,2,3,4

16, 544, 5186, 109528, 2169685, 39696088, 741925729, 14189246566, 269528695666, 5096101360077, 96554573632988, 1834601649407584, 34805324258849319, 659906675083272359, 12522345994463073108, 237662773521226652080

Offset

1,1

Comments

Every 0 is next to 0 4'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 3's

Column 6 of A196685

Links

R. H. Hardin, Table of n, a(n) for n = 1..142

Example

Some solutions for n=4
..1..1..0..0..0..0....0..1..2..1..1..0....0..1..1..0..0..1....1..0..1..1..0..0
..0..1..1..2..1..1....2..1..2..0..1..1....1..2..2..2..1..2....1..1..2..2..0..0
..0..1..2..0..2..1....1..0..1..1..2..2....1..0..1..1..1..2....0..2..3..1..0..0
..1..1..0..0..0..0....1..0..2..1..0..1....2..1..2..0..0..1....0..1..2..1..0..0

Crossrefs

Sequence in context: A274136 A187160 A196216 * A131515 A223106 A268564

Adjacent sequences: A196680 A196681 A196682 * A196684 A196685 A196686

Keyword

nonn

Author

R. H. Hardin Oct 05 2011

Status

approved