A196695 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,3,0,4 for x=0,1,2,3,4

13, 890, 55431, 2810070, 155701871, 8471917814, 465819437152, 25583402376768, 1398455518363119, 76661027104639150, 4203790099076060084, 230345827821159257944, 12623159468847996681154, 691830641310960796256835

Offset

1,1

Comments

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

Column 7 of A196696

Links

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

Example

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

Crossrefs

Sequence in context: A294793 A013539 A201255 * A196728 A197068 A337575

Adjacent sequences: A196692 A196693 A196694 * A196696 A196697 A196698

Keyword

nonn

Author

R. H. Hardin Oct 05 2011

Status

approved