A076117 Cubes (or 0) from A076116.
1, 27, 27, 0, 125, 27, 343, 0, 216, 125, 1331, 0, 2197, 343, 3375, 216, 4913, 729, 6859, 0, 9261, 1331, 12167, 0, 1000, 2197, 729, 0, 24389, 3375, 29791, 0, 35937, 4913, 42875, 0, 50653, 6859, 59319, 0, 68921, 9261, 79507, 0, 3375, 12167, 103823, 5832
Offset: 1
Keywords
Formula
Let c = A076116(n); if c > 0, then a(n) = n*(2c + n - 1)/2. If c = 0 then a(n) = 0. - David Wasserman, Apr 02 2005
Extensions
More terms from David Wasserman, Apr 02 2005