A184301 Number of strings of numbers x(i=1..n) in 0..7 with sum i^3*x(i)^2 equal to n^3*49

1, 1, 1, 1, 4, 29, 82, 819, 4062, 21900, 97458, 711528, 3745075, 22185248, 113394385, 740376712, 3928605875

Offset

1,5

Comments

Column 7 of A184303

Links

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

Example

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

Crossrefs

Sequence in context: A255635 A280854 A042379 * A192025 A288542 A024394

Adjacent sequences: A184298 A184299 A184300 * A184302 A184303 A184304

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved