A188273 Number of nondecreasing strings of numbers x(i=1..n) in -5..5 with sum x(i)^3 equal to 0.

1, 6, 6, 21, 21, 62, 68, 170, 216, 450, 644, 1154, 1752, 2850, 4364, 6679, 10023, 14742, 21454, 30667, 43335, 60506, 83372, 113948, 153702, 205870, 272696, 358636, 467554, 605084, 777626, 992267, 1258507, 1586004, 1987460, 2476849, 3070137, 3787452

Offset

1,2

Comments

Column 5 of A188277.

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for n=8, k=5:
.-3...-4...-4...-5...-3...-4...-5...-5...-3...-3...-4...-5...-1...-4...-5...-4
.-3...-4...-4...-1...-3...-2...-3...-4...-2...-2...-3...-3....0...-3...-2...-4
.-2...-1...-2...-1...-3...-2....0...-3...-2...-2....0...-3....0...-3...-1...-3
.-1....0....1...-1...-2...-1....2....0...-2....0....0...-1....0...-3....2...-3
.-1....0....1....0....2....0....2....0....2....0....0....1....0...-2....2...-2
.-1....1....1....0....3....3....2....3....2....2....0....3....0....1....3....1
..1....4....2....4....3....3....4....4....2....2....3....3....0....3....3....4
..4....4....5....4....3....3....4....5....3....3....4....5....1....5....4....5

Crossrefs

Sequence in context: A339338 A198340 A189980 * A185786 A341245 A178822

Adjacent sequences: A188270 A188271 A188272 * A188274 A188275 A188276

Keyword

nonn

Author

R. H. Hardin, Mar 26 2011

Status

approved