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A201800 Number of zero-sum nX5 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors 0
381, 28625, 562961, 20960485, 722587629, 27941324053, 1077779765471 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A201803

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Sequence in context: A222163 A297543 A297801 * A172848 A214896 A204861

Adjacent sequences:  A201797 A201798 A201799 * A201801 A201802 A201803

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 05 2011

STATUS

approved

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Last modified June 18 04:41 EDT 2021. Contains 345098 sequences. (Running on oeis4.)