Sum of 3 Cubes in 2 Distinct Ways
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Theorem
The sequence of positive integers which can be expressed as the sum of $3$ cubes numbers in two or more different ways begins:
\(\ds 251\) | \(=\) | \(\ds 5^3 + 5^3 + 1^3\) | \(\ds = 6^3 + 3^3 + 2^3\) |
This sequence is ??? in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $251$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $251$