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A196725 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,1,4,0,3 for x=0,1,2,3,4 1
1, 5, 76, 3394, 547874, 280203939, 466328648058, 2525576718158704, 44298467976731953802, 2511317101071327391390891 (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 4's, every 3 is next to 3 0's, every 4 is next to 4 3's

Diagonal of A196729

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

..0..0..0..0....1..0..0..0....0..1..1..0....0..0..0..1....0..3..0..1

..1..3..0..1....1..0..0..0....1..0..0..0....0..0..0..1....0..0..3..1

..1..0..0..1....0..1..1..0....1..0..3..1....3..0..0..0....0..0..0..0

..0..0..3..0....0..0..0..0....0..0..0..1....0..0..1..1....0..0..3..0

CROSSREFS

Sequence in context: A209095 A136300 A196689 * A197063 A144997 A088756

Adjacent sequences:  A196722 A196723 A196724 * A196726 A196727 A196728

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 05 2011

STATUS

approved

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Last modified May 31 09:30 EDT 2020. Contains 334748 sequences. (Running on oeis4.)