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A202045 Number of zero-sum nX6 -1..1 arrays with every element unequal to at most two horizontal and vertical neighbors 0
141, 7669, 149149, 4188917, 119412837, 3573771563, 108356007319, 3336377520415, 103795034576253, 3257057281323371 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A202047

LINKS

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

EXAMPLE

Some solutions for n=2

.-1..1..1.-1.-1..1...-1.-1..1..1.-1..1....0.-1.-1.-1..1..1....1..1.-1.-1..0..0

.-1.-1.-1..1..1..1....0..0..0..0.-1..1....0..0..0..0..1..0....1..1.-1.-1.-1..1

CROSSREFS

Sequence in context: A005849 A172633 A221104 * A066623 A302331 A172738

Adjacent sequences:  A202042 A202043 A202044 * A202046 A202047 A202048

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 10 2011

STATUS

approved

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Last modified January 18 11:33 EST 2019. Contains 319271 sequences. (Running on oeis4.)