A197622 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4

0, 16, 272, 3157, 59395, 714768, 7646732, 116014737, 1664439925, 21323586168, 283745302013, 3898825134588, 52918231762747, 715322738180886, 9626988393674478, 129915044348946169, 1761948064821348004

Offset

1,2

Comments

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

Column 7 of A197623

Links

R. H. Hardin, Table of n, a(n) for n = 1..109

Example

Some solutions containing all values 0 to 4 for n=4
..1..2..0..1..1..3..1....0..1..3..1..0..2..1....1..0..1..3..1..1..0
..3..1..2..3..1..1..2....1..4..1..2..2..1..3....3..1..0..1..1..3..1
..1..0..1..1..4..1..2....3..1..2..0..1..0..1....1..4..1..4..1..3..1
..2..1..3..1..1..3..1....1..2..0..1..3..1..0....2..1..3..1..0..1..2

Crossrefs

Sequence in context: A330151 A000487 A249391 * A002303 A158610 A221176

Adjacent sequences: A197619 A197620 A197621 * A197623 A197624 A197625

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved