A188281 Number of nondecreasing strings of numbers x(i=1..7) in -n..n with sum x(i)^3 equal to 0

4, 10, 22, 41, 68, 114, 202, 273, 402, 548, 720, 979, 1248, 1660, 2072, 2525, 3068, 3802, 4498, 5377, 6632, 7846, 8998, 10497, 11970, 13908, 15870, 18569, 20582, 23382, 25854, 28777, 32118, 35686, 40460, 45077, 49272, 53972, 60012, 65619, 71256, 80372

Offset

1,1

Comments

Row 7 of A188277

Links

R. H. Hardin, Table of n, a(n) for n = 1..181

Example

Some solutions for n=8
.-8...-7...-7...-7...-7...-3...-6...-7...-4...-8...-6...-5...-1...-7...-6...-6
.-4...-3...-4...-4...-7...-3...-6...-3...-4...-6...-3...-4...-1...-6...-6...-2
..1...-3....0...-1...-1...-2...-3...-3...-2...-1....0...-3....0...-2...-6....0
..2...-2....0....4....4....0....0....0...-2....0....0....0....0....0....2....2
..2....4....0....4....4....2....3....3...-2....1....0....3....0....2....4....3
..6....5....4....4....6....3....6....3....3....6....3....4....1....6....4....4
..7....6....7....6....7....3....6....7....5....8....6....5....1....7....8....5

Crossrefs

Sequence in context: A155337 A155402 A155232 * A227327 A023609 A055364

Adjacent sequences: A188278 A188279 A188280 * A188282 A188283 A188284

Keyword

nonn

Author

R. H. Hardin Mar 26 2011

Status

approved