A184346 Number of strings of numbers x(i=1..n) in 0..7 with sum i^4*x(i) equal to n^4*7

1, 1, 2, 1, 7, 16, 45, 628, 1612, 14387, 52539, 275568, 1397560, 5222290, 30835346, 108322293, 606465366, 2386082882

Offset

1,3

Comments

Column 7 of A184348

Links

Table of n, a(n) for n=1..18.

Example

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

Crossrefs

Sequence in context: A141488 A113042 A305881 * A178622 A013070 A012888

Adjacent sequences: A184343 A184344 A184345 * A184347 A184348 A184349

Keyword

nonn

Author

R. H. Hardin Jan 11 2011

Status

approved