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A199521 Number of nX6 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 two or fewer horizontal or vertical neighbors 0
45, 15400, 174524175, 76066541392, 1049206835165446 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A199523
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..1..2..2....0..0..0..1..2..3....0..0..0..1..2..3....0..0..0..1..2..3
..0..1..0..3..3..1....0..1..3..2..2..1....0..1..0..2..1..2....0..1..3..0..1..3
..1..3..2..3..1..2....2..3..0..2..3..1....2..1..3..3..3..2....2..3..1..2..2..1
CROSSREFS
Sequence in context: A101994 A201004 A171118 * A007537 A287434 A225991
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 07 2011
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)