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A196849 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,0,2,4 for x=0,1,2,3,4 0
1, 11, 206, 16876, 4326720, 3805929995, 11300853019444, 113522093851497024 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

Diagonal of A196856

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..0..0..0..0....0..0..1..1....0..0..0..2....0..1..1..0....0..0..0..0

..2..0..0..2....0..0..0..0....2..0..0..0....0..0..0..0....0..0..1..1

..1..1..0..1....2..2..2..1....2..0..2..2....2..1..2..1....1..1..2..0

..0..0..0..1....0..0..0..1....0..1..1..0....0..1..0..1....0..0..0..0

CROSSREFS

Sequence in context: A091814 A280957 A020518 * A196699 A131216 A034909

Adjacent sequences:  A196846 A196847 A196848 * A196850 A196851 A196852

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 06 2011

STATUS

approved

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Last modified June 25 07:53 EDT 2019. Contains 324347 sequences. (Running on oeis4.)