A184316 Number of strings of numbers x(i=1..n) in 0..7 with sum i^2*x(i)^3 equal to n^2*343

1, 1, 1, 1, 3, 7, 69, 574, 3336, 23562, 140933, 948340, 5733551, 37091416, 225775799, 1419329282, 8589008422

Offset

1,5

Comments

Column 7 of A184318

Links

Table of n, a(n) for n=1..17.

Example

All solutions for n=5
..0....0....7
..0....0....4
..0....7....4
..0....7....5
..7....0....6

Crossrefs

Sequence in context: A120364 A088797 A165589 * A127177 A261136 A127179

Adjacent sequences: A184313 A184314 A184315 * A184317 A184318 A184319

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved