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A196323 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,3,0,4,2 for x=0,1,2,3,4 0
1, 7, 27, 295, 5538, 187787, 11937347, 1373281599, 286527796314, 108679921617242, 74775639068058776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

Diagonal of A196329

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..0..0..0..0....0..2..2..0....2..0..2..0....0..0..2..0....0..0..0..2

..0..0..2..2....2..0..0..0....0..0..2..0....0..0..2..2....0..0..0..0

..0..0..2..0....2..0..2..2....0..2..2..0....0..0..0..0....0..0..0..0

..0..0..2..0....0..0..2..0....0..2..0..0....0..0..0..0....0..2..2..0

CROSSREFS

Sequence in context: A035081 A193257 A173193 * A003148 A033910 A196647

Adjacent sequences:  A196320 A196321 A196322 * A196324 A196325 A196326

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 01 2011

STATUS

approved

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Last modified December 6 09:25 EST 2019. Contains 329791 sequences. (Running on oeis4.)