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A199198 Number of nX5 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or two horizontal or vertical neighbors 0
6, 424, 17598, 341015, 86954982, 9746409872, 533423159945, 11692182169225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A199201

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A273820 A162088 A199253 * A000410 A275686 A173760

Adjacent sequences:  A199195 A199196 A199197 * A199199 A199200 A199201

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 03 2011

STATUS

approved

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Last modified May 15 23:24 EDT 2021. Contains 343937 sequences. (Running on oeis4.)