A202959 - OEIS

A202959

Number of arrays of n+2 integers in -5..5 with sum zero and adjacent elements differing in absolute value

62, 544, 4048, 33736, 289536, 2475008, 21274708, 184258272, 1602929218, 13990833912, 122510857450, 1075782280468, 9468706858932, 83511798894532, 737905024410346, 6530699064229052, 57882816085025096, 513698095091077304

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A202962

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A124995 A020191 A212834 * A209913 A209906 A362458

Adjacent sequences: A202956 A202957 A202958 * A202960 A202961 A202962

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 26 2011

STATUS

approved