A196785 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,4,3,0,1 for x=0,1,2,3,4

1, 99, 1351, 17175, 289761, 4216301, 65282256, 993629439, 15177736646, 231779144185, 3537181684727, 53999808742021, 824352446553481, 12584320094861238, 192108754190909442, 2932675433265799165

Offset

1,2

Comments

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

Column 7 of A196786

Links

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

Example

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

Crossrefs

Sequence in context: A201044 A196577 A259693 * A196808 A305721 A197372

Adjacent sequences: A196782 A196783 A196784 * A196786 A196787 A196788

Keyword

nonn

Author

R. H. Hardin Oct 06 2011

Status

approved