A196077 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,2,1,4 for x=0,1,2,3,4

0, 8, 12, 111, 931, 4237, 31062, 156559, 1100005, 6068247, 36690646, 216691051, 1306291763, 7830872051, 46246201736, 276088388127, 1648566730899, 9851802002425, 58646275919149, 349472725050705, 2085510547835213

Offset

1,2

Comments

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

Column 7 of A196078

Links

R. H. Hardin, Table of n, a(n) for n = 1..126

Example

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

Crossrefs

Sequence in context: A230545 A180922 A083128 * A067923 A258780 A228663

Adjacent sequences: A196074 A196075 A196076 * A196078 A196079 A196080

Keyword

nonn

Author

R. H. Hardin Sep 27 2011

Status

approved