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A197243 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4 0
1, 4, 3, 275, 5062, 405065, 48703999, 11304892092, 9455531359836, 13086658688226332 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

Diagonal of A197250

LINKS

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

EXAMPLE

All solutions containing all values 0 to 4 for n=4

..0..1..3..1....1..0..1..2....1..3..1..0....2..1..0..1

..1..4..1..0....3..1..4..1....0..1..4..1....1..4..1..3

..3..1..4..1....1..4..1..0....1..4..1..3....0..1..4..1

..1..0..1..2....0..1..3..1....2..1..0..1....1..3..1..0

CROSSREFS

Sequence in context: A335913 A340667 A344407 * A175372 A069191 A175362

Adjacent sequences:  A197240 A197241 A197242 * A197244 A197245 A197246

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 12 2011

STATUS

approved

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Last modified January 22 01:28 EST 2022. Contains 350481 sequences. (Running on oeis4.)