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
Keywords
Examples
All solutions for n=5 ..0....0 ..0....0 ..3....0 ..3....0 ..0....3
Links
- R. H. Hardin, Table of n, a(n) for n = 1..40
Crossrefs
Cf. A184318.
Comments