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A196689 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,1,3,0,4 for x=0,1,2,3,4 0
1, 5, 76, 3394, 546956, 279754939, 465819437152, 2520182960610600, 44155322347113863050, 2500562115488233367551895 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Every 0 is next to 0 2's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 0's, every 4 is next to 4 4's
Diagonal of A196696
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..1..1....1..0..0..0....0..0..1..1....1..0..0..0
..0..0..0..0....0..0..3..0....1..0..0..0....1..0..0..0....1..0..0..3
..0..0..0..1....0..0..0..0....0..3..0..3....1..0..1..1....0..3..0..0
..1..1..0..1....0..3..0..0....0..1..1..0....0..3..0..0....1..1..0..0
CROSSREFS
Sequence in context: A011918 A209095 A136300 * A196725 A197063 A144997
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 05 2011
STATUS
approved

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Last modified April 15 18:46 EDT 2024. Contains 371696 sequences. (Running on oeis4.)