A197197 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

9, 85, 621, 5311, 42664, 350711, 2873141, 23497244, 192348965, 1574634137, 12888915436, 105499317727, 863568784956, 7068699587730, 57860690577672, 473616132534126, 3876768069957732, 31733162865254064, 259750677790161795

Offset

1,1

Comments

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

Column 6 of A197199

Links

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

Example

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

Crossrefs

Sequence in context: A236385 A335670 A196434 * A295118 A339550 A228417

Adjacent sequences: A197194 A197195 A197196 * A197198 A197199 A197200

Keyword

nonn

Author

R. H. Hardin, Oct 11 2011

Status

approved