A196971 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,1 for x=0,1,2,3,4

5, 57, 386, 3675, 31899, 260394, 2246059, 19246379, 164006734, 1400773245, 11965906663, 102191052974, 872793094884, 7454220149765, 63663510400324, 543728417138307, 4643793942698920, 39660975017361508, 338730301259452052

Offset

1,1

Comments

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

Column 5 of A196974

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

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

Crossrefs

Sequence in context: A196319 A197304 A000362 * A197558 A218658 A266278

Adjacent sequences: A196968 A196969 A196970 * A196972 A196973 A196974

Keyword

nonn

Author

R. H. Hardin Oct 08 2011

Status

approved