Positive Integers Expressible by Sum of Integers whose Reciprocals Sum to 1/Examples/78
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Example of Positive Integer Expressible by Sum of Integers whose Reciprocals Sum to 1
| \(\ds 2 + 6 + 8 + 10 + 12 + 40\) | \(=\) | \(\ds 78\) | ||||||||||||
| \(\ds \frac 1 2 + \frac 1 6 + \frac 1 8 + \frac 1 {10} + \frac 1 {12} + \frac 1 {40}\) | \(=\) | \(\ds 1\) |
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $77$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $77$