A184718 Number of strings of numbers x(i=1..n) in 0..7 with sum i*x(i)^3 equal to n*343

1, 1, 2, 2, 15, 76, 560, 3604, 24327, 152952, 925232, 5495907, 31966719, 182331659, 1021217701, 5622236708, 30456148470, 162478306805, 854327762047, 4430787907798, 22680031606293, 114649453836280, 572666511225162

Offset

1,3

Comments

Column 7 of A184720

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

All solutions for n=5
..0....5....2....3....5....0....3....5....4....7....0....3....7....0....0
..6....7....5....6....7....7....1....1....5....4....3....7....0....2....0
..6....6....7....5....0....7....7....3....2....5....3....1....0....4....0
..5....4....3....4....6....0....2....7....7....6....5....6....7....7....0
..3....0....4....5....2....0....5....3....1....1....6....3....0....3....7

Crossrefs

Sequence in context: A216613 A215900 A264838 * A079897 A097540 A345225

Adjacent sequences: A184715 A184716 A184717 * A184719 A184720 A184721

Keyword

nonn

Author

R. H. Hardin Jan 20 2011

Status

approved