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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 February 23 05:13 EST 2025. Contains 381124 sequences.
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