A202960 Number of arrays of n+2 integers in -6..6 with sum zero and adjacent elements differing in absolute value

90, 972, 9010, 90604, 941086, 9824176, 102972822, 1085236504, 11493823804, 122199247152, 1303262970318, 13937228021316, 149401572804700, 1604863727556740, 17270995998356176, 186167832760838568

Offset

1,1

Comments

Column 6 of A202962

Links

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

Example

Some solutions for n=4
..6....1....4....5...-3....4...-3....1....1...-6....5....4....2....0....1...-2
.-2...-4...-1...-6...-4...-6...-6...-4...-2....1....2...-6...-6....2....2....5
..0....1...-4...-1....0...-1...-3...-6....3...-2...-5....0....5....0....0....2
.-3...-4....2....5....2....4....1....3...-5....4....0...-1....1....5...-2...-3
..4....0...-4....0....6....2....5....0...-3....0....2...-3....4...-1....0...-2
.-5....6....3...-3...-1...-3....6....6....6....3...-4....6...-6...-6...-1....0

Crossrefs

Sequence in context: A376706 A101243 A173483 * A124167 A223364 A048548

Adjacent sequences: A202957 A202958 A202959 * A202961 A202962 A202963

Keyword

nonn

Author

R. H. Hardin Dec 26 2011

Status

approved