A184239 Number of strings of numbers x(i=1..n) in 0..8 with sum i^2*x(i)^2 equal to n^2*64

1, 1, 1, 1, 5, 88, 571, 3719, 32608, 229978, 1944146, 12785619, 92175303, 562796025, 3586783831, 21282332690, 123857108265, 711033477793, 3887110307164, 21647422702326, 114426238905952, 619561557445710

Offset

1,5

Comments

Column 8 of A184240

Links

Table of n, a(n) for n=1..22.

Example

All solutions for n=5
..0....4....4....6....0
..0....2....8....7....0
..8....4....4....6....0
..8....8....7....3....0
..0....4....4....6....8

Crossrefs

Sequence in context: A297529 A300135 A221465 * A054954 A266064 A106971

Adjacent sequences: A184236 A184237 A184238 * A184240 A184241 A184242

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved