A201436 Number of zero-sum -5..5 arrays of n elements with first through fourth differences also in -5..5

1, 5, 27, 115, 479, 1341, 4285, 14655, 50273, 176501, 608601, 2124765, 7445803, 26215687, 92619475, 327842063, 1163529557, 4137930391, 14741976265, 52598018933, 187903914621, 672086812005, 2406551665793, 8625934717463

Offset

1,2

Comments

Column 5 of A201439

Links

R. H. Hardin, Table of n, a(n) for n = 1..103

Example

Some solutions for n=9
..0....2...-4...-4...-1...-3....1....3...-1....4....1...-2....3...-2...-1...-4
..5...-2...-3...-1...-1...-3....4...-1....1....4....2...-3....5...-3...-1...-4
..5...-4....0....2...-1...-1....4...-3....2....1....4...-2....3...-1....2...-2
..2...-3....1....3....1....2....3...-2....2...-3....3....0....1....1....3....0
.-2....0....1....4....3....2....2....2....1...-4....0....3....0....1....2....1
.-4....3....0....2....3....0...-1....4...-2...-3...-2....5...-1....2....0....0
.-4....3....0...-1....0...-1...-4....2...-3...-2...-2....3...-2....3...-3....1
.-2....1....1...-3...-2....0...-5...-2...-2....0...-2...-1...-4....1...-3....4
..0....0....4...-2...-2....4...-4...-3....2....3...-4...-3...-5...-2....1....4

Crossrefs

Sequence in context: A349919 A212783 A226315 * A202508 A129868 A069993

Adjacent sequences: A201433 A201434 A201435 * A201437 A201438 A201439

Keyword

nonn

Author

R. H. Hardin Dec 01 2011

Status

approved