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A202132 Number of zero-sum nX3 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor 0
1, 123, 1857, 135315, 3767643, 227460779, 8550543057, 461409633685, 19953260512267, 1020672385339045, 47169124107393747, 2357295503312609943, 112529204189556106109, 5573350513364442367517, 270509318554502643186297 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A202134
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....3..3..3....2..2.-3....3..3.-1...-2..2..2....2.-2.-2....1..1.-3
..0..1..1....0.-3.-3...-3..2.-3....0..0.-1...-2.-2..2....2..2..2....0..0.-3
.-2.-2..1....0..0.-3...-3..3..3....0.-2.-2...-2..1..1....2.-3.-3....0..2..2
CROSSREFS
Sequence in context: A324627 A259907 A115983 * A160040 A297524 A163711
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 11 2011
STATUS
approved

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Last modified July 22 09:51 EDT 2024. Contains 374490 sequences. (Running on oeis4.)