Theorem
The sequence of integers which are the sum of the sequence of the first $n$ cubes begins:
- $0, 1, 9, 36, 100, 225, 441, 784, 1296, 2025, 3025, \ldots$
This sequence is A000537 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).