login
A196684
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,2,3 for x=0,1,2,3,4
1
25, 1629, 22461, 796557, 25142624, 741925729, 23029545105, 718199634805, 22138818455076, 682005890331480, 21125269566890884, 654095412346594187, 20229325302713363751, 625878086264793074895, 19368465617464223064077
OFFSET
1,1
COMMENTS
Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 2's, every 4 is next to 4 3's
Column 7 of A196685
LINKS
EXAMPLE
Some solutions for n=4
..0..0..2..1..1..2..0....0..1..1..0..1..2..0....0..1..1..0..0..1..1
..0..2..1..0..0..1..2....0..1..2..0..1..1..0....0..2..1..2..0..2..0
..0..1..2..2..1..1..1....0..2..0..0..1..1..1....0..0..0..1..1..1..2
..1..2..0..1..1..0..0....0..1..2..1..1..0..1....0..0..0..1..1..0..1
CROSSREFS
Sequence in context: A219091 A196299 A196217 * A125826 A263967 A290881
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 05 2011
STATUS
approved