A198182 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,0,0 for x=0,1,2,3,4

1, 16, 77, 331, 2033, 8298, 48958, 216307, 1155412, 5522239, 28200527, 139401115, 695721892, 3477106364, 17307490471, 86498278609, 430707067503, 2150928384789, 10722364479972, 53497634923663, 266813770707004, 1330929200315097

Offset

1,2

Comments

Every 0 is next to 0 0'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 A198185

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..1..2....1..2..1..0..1....0..1..1..2..1....1..2..1..1..0
..3..0..4..0..1....0..3..0..3..2....1..2..0..3..0....0..3..0..2..1
..0..3..0..2..1....1..0..4..0..1....1..0..4..0..1....3..0..4..0..1
..1..2..1..1..0....2..1..0..3..0....2..1..0..1..2....0..3..0..1..2

Crossrefs

Sequence in context: A346636 A200873 A082966 * A281466 A302620 A195976

Adjacent sequences: A198179 A198180 A198181 * A198183 A198184 A198185

Keyword

nonn

Author

R. H. Hardin Oct 21 2011

Status

approved