Talk:Square pyramidal number: Difference between revisions

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<sup>n→∞ </sup><sup>1</sup>
:::Can anyone tell me if it's new? --[[User:Ancora Luciano|Ancora Luciano]] ([[User talk:Ancora Luciano|talk]]) 07:41, 26 May 2013 (UTC)
 
 
::::The induction principle enshrines the validity of this "theorem". Its algebraic proof would be an exciting challenge between the insiders--[[Special:Contributions/79.22.249.176|79.22.249.176]] ([[User talk:79.22.249.176|talk]]) 15:56, 22 July 2013 (UTC)