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A201801 Number of zero-sum nX6 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors 0
1751, 235827, 7099021, 472565771, 27941324053 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A201803

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=2

.-1.-1..2..2.-1..2...-1..0.-1..2.-2..1...-2.-2.-2..0..0..2....0.-2..1..1..2..2

.-2.-2..2..2.-1.-2....2..0.-1..2.-2..0....2.-1.-1..1..1..2...-2.-2.-2..1..2.-1

CROSSREFS

Sequence in context: A190829 A038010 A324710 * A172833 A172882 A251892

Adjacent sequences:  A201798 A201799 A201800 * A201802 A201803 A201804

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 05 2011

STATUS

approved

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Last modified June 19 14:40 EDT 2021. Contains 345140 sequences. (Running on oeis4.)