Respuestas al mensaje #4,482

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🇵🇦 Nuestro primer dominio localizado está en español en kiwifarms.pa. Our first localized domain is on Spanish on kiwifarms.pa.

The first n numbers sum up to n(n+1)/2; the first n cubes sum up to the square of that, i.e. n²(n+1)²/4. Both formulas are easily proved by...