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A202249 Number of zero-sum -5..5 arrays of n elements with adjacent element differences also in -5..5 1
1, 5, 41, 309, 2385, 18841, 150523, 1212443, 9832015, 80165217, 656550255, 5397261675, 44510060161, 368068132303, 3050896796199, 25341289818675, 210875713442797, 1757652942915635, 14671489102807881, 122627141004142679 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A202252

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=6

..0....0...-4....3....0....4...-3...-1...-3....4...-2....3...-4...-4...-1...-1

.-5....2....0...-1....3...-1....2....1...-3...-1....0....3...-5...-4...-2....3

.-2...-2....1...-2....3...-2....3...-2....0...-3....0....2...-1....0....0....0

..3...-3....1...-4...-1...-1....4...-1....3...-2....4...-2....1....1....2...-5

..0....2....0....0...-2....2...-1....3....1....3....1...-1....4....2...-1....0

..4....1....2....4...-3...-2...-5....0....2...-1...-3...-5....5....5....2....3

CROSSREFS

Sequence in context: A218349 A154577 A198688 * A067381 A155612 A145215

Adjacent sequences:  A202246 A202247 A202248 * A202250 A202251 A202252

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 14 2011

STATUS

approved

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Last modified July 12 20:45 EDT 2020. Contains 335669 sequences. (Running on oeis4.)