A196800 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,0,4,1 for x=0,1,2,3,4

8, 648, 23920, 834632, 29239326, 1029024216, 36350586798, 1279579729422, 45097830841266, 1589630250146316, 56014699053391990, 1974063158226709556, 69568832383885224954, 2451683126595415033544, 86400830410674087049712

Offset

1,1

Comments

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

Column 6 of A196802

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

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

Crossrefs

Sequence in context: A274588 A027877 A129927 * A196588 A197045 A258385

Adjacent sequences: A196797 A196798 A196799 * A196801 A196802 A196803

Keyword

nonn

Author

R. H. Hardin Oct 06 2011

Status

approved