A196214 Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,2,4 for x=0,1,2,3,4

5, 61, 290, 2161, 14605, 101780, 723029, 5056631, 35105556, 245353935, 1720551401, 12056500808, 84351164429, 589889437285, 4128468776358, 28906652171595, 202358098703973, 1416223455876968, 9911711623472035, 69377533372430719

Offset

1,1

Comments

Every 0 is next to 0 3'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 4's

Column 4 of A196218

Links

R. H. Hardin, Table of n, a(n) for n = 1..250

Example

Some solutions for n=5
..0..0..0..1....0..0..1..1....0..0..0..1....2..1..0..0....1..2..1..1
..1..2..1..1....0..2..1..0....1..2..1..1....1..1..1..2....0..0..0..0
..1..2..1..0....1..1..1..2....1..2..2..0....0..0..1..1....1..1..2..1
..0..0..2..0....2..0..0..1....0..1..1..1....0..0..2..0....1..1..2..1
..0..0..1..1....1..0..0..1....1..1..0..1....1..1..1..0....0..0..0..0

Crossrefs

Sequence in context: A046976 A092838 A196296 * A196681 A281713 A060060

Adjacent sequences: A196211 A196212 A196213 * A196215 A196216 A196217

Keyword

nonn

Author

R. H. Hardin Sep 29 2011

Status

approved