A196435 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4

13, 178, 1801, 21803, 246463, 2856711, 32855368, 378154308, 4356726770, 50163397373, 577634629068, 6651858481248, 76599144629883, 882067405853789, 10157379663581632, 116966622243380304, 1346919921065307751

Offset

1,1

Comments

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

Column 7 of A196436

Links

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

Example

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

Crossrefs

Sequence in context: A198448 A349247 A331496 * A197198 A295119 A196956

Adjacent sequences: A196432 A196433 A196434 * A196436 A196437 A196438

Keyword

nonn

Author

R. H. Hardin Oct 02 2011

Status

approved