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Sums and Perfect Sqares

Revision as of 12:14, 14 June 2019 by Colball (talk | contribs) (Created page with "Here are many proofs for the Theory that $1+2+3+<cmath>...</cmath>+n+1+2+3+<cmath>...</cmath>+(n-1)")
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Here are many proofs for the Theory that $1+2+3+\[...\]+n+1+2+3+\[...\]+(n-1)

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