A184312 Number of strings of numbers x(i=1..n) in 0..3 with sum i^2*x(i)^3 equal to n^2*27.

1, 1, 1, 1, 2, 2, 6, 30, 69, 230, 662, 2244, 6197, 20782, 57963, 185236, 534294, 1636436, 4788888, 14148505, 41505698, 119551191, 347802192, 984873101, 2823972122, 7899999963, 22281193586, 61710573450, 171287868395, 469925476292

Offset

1,5

Comments

Column 3 of A184318.

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

All solutions for n=5
..0....0
..0....0
..3....0
..3....0
..0....3

Crossrefs

Cf. A184318.

Sequence in context: A179929 A278258 A067644 * A097801 A164347 A052584

Adjacent sequences: A184309 A184310 A184311 * A184313 A184314 A184315

Keyword

nonn

Author

R. H. Hardin, Jan 10 2011

Status

approved