A196342 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,4,0,2,3 for x=0,1,2,3,4

13, 275, 3132, 53647, 869434, 13932416, 224664284, 3596759057, 57811730338, 929821862056, 14939206389945, 240046010119898, 3857530827560368, 61988984647826444, 996134711490423957, 16007484096536092797

Offset

1,1

Comments

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

Column 7 of A196343

Links

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

Example

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

Crossrefs

Sequence in context: A034911 A196652 A197455 * A196321 A197306 A196973

Adjacent sequences: A196339 A196340 A196341 * A196343 A196344 A196345

Keyword

nonn

Author

R. H. Hardin Oct 01 2011

Status

approved