A197177 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,2,1,0,0 for x=0,1,2,3,4

4, 58, 665, 7172, 92206, 1096217, 13530178, 164914460, 2020163498, 24703508188, 302309943629, 3698448129411, 45252432505040, 553659760056682, 6774120187730445, 82881818656461776, 1014068105098968313

Offset

1,1

Comments

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

Column 5 of A197180

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions containing all values 0 to 4 for n=4
..0..3..0..3..0....0..0..0..3..0....0..0..0..3..0....2..1..0..0..0
..3..0..4..0..1....0..0..0..0..3....3..0..0..0..0....1..0..4..0..0
..0..4..0..3..2....1..0..0..4..0....0..3..0..4..0....0..4..0..0..0
..0..0..3..0..1....2..1..0..0..0....1..2..1..0..0....0..0..0..3..0

Crossrefs

Sequence in context: A103907 A108148 A099348 * A155668 A240430 A334991

Adjacent sequences: A197174 A197175 A197176 * A197178 A197179 A197180

Keyword

nonn

Author

R. H. Hardin Oct 11 2011

Status

approved