login
A197749
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,0 for x=0,1,2,3,4
1
13, 465, 17332, 462515, 15943658, 517762136, 16946352492, 558436739769, 18226535390462, 597638865062474, 19604855669620153, 642346166847903042, 21058400260743006736, 690290048778192927506, 22625839121192679890893
OFFSET
1,1
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 1's, every 4 is next to 4 0's
Column 7 of A197750
LINKS
EXAMPLE
Some solutions containing all values 0 to 4 for n=4
..0..2..0..0..0..0..0....0..0..0..0..0..0..0....0..1..3..1..0..0..2
..2..2..0..4..0..0..2....0..4..0..0..0..0..0....1..0..1..0..4..0..0
..0..0..0..0..1..0..2....0..0..2..1..0..0..0....3..1..1..2..0..4..0
..0..0..2..1..3..1..0....0..2..1..3..1..2..0....1..1..3..1..0..0..0
CROSSREFS
Sequence in context: A081862 A198012 A197895 * A198154 A197234 A262570
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 17 2011
STATUS
approved