A200200 Number of -4..4 arrays x(0..n+2) of n+3 elements with zero sum and nonzero second and third differences

422, 3196, 24542, 187530, 1453304, 11315108, 88657470, 697548282, 5508571400, 43635932538, 346582563516, 2759102483488, 22009380252406, 175882840702296, 1407766935222636, 11283861015674038, 90561415687714086, 727670172922068894

Offset

1,1

Comments

Column 4 of A200204

Links

R. H. Hardin, Table of n, a(n) for n = 1..94

Example

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

Crossrefs

Sequence in context: A109473 A245315 A357890 * A231585 A231837 A231745

Adjacent sequences: A200197 A200198 A200199 * A200201 A200202 A200203

Keyword

nonn

Author

R. H. Hardin Nov 14 2011

Status

approved