A188278 Number of nondecreasing strings of numbers x(i=1..4) in -n..n with sum x(i)^3 equal to 0

3, 6, 10, 15, 21, 30, 38, 47, 59, 70, 82, 99, 113, 128, 144, 163, 181, 204, 226, 249, 271, 294, 318, 347, 375, 402, 434, 465, 497, 530, 562, 597, 631, 670, 706, 749, 787, 828, 870, 915, 961, 1006, 1050, 1097, 1145, 1196, 1244, 1299, 1349, 1402, 1456, 1509, 1567

Offset

1,1

Comments

Row 4 of A188277

Links

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

Example

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

Crossrefs

Sequence in context: A227430 A051166 A373934 * A188279 A365699 A346735

Adjacent sequences: A188275 A188276 A188277 * A188279 A188280 A188281

Keyword

nonn

Author

R. H. Hardin Mar 26 2011

Status

approved