Talk:Square pyramidal number: Difference between revisions

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{{DYK talk|14 January|2022|image=Rye Castle, Rye, East Sussex, England-6April2011 (1) (cropped).jpg|entry=... that the '''[[square pyramidal number|number of cannonballs in a square pyramid]]''' ''(pictured)'' with <math>n</math> cannonballs along each edge is <math>\frac{n(n+1)(2n+1)}{6}</math>?|nompage=Template:Did you know nominations/Square pyramidal number}}
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[[User:Bill01568|Bill01568]] ([[User talk:Bill01568|talk]]) 16:29, 30 December 2013 (UTC)
:Seems reasonable, [[File:Yes check.svg|20px|link=|alt=]] '''Done'''<!-- Template:ESp -->. ''<b style="font-variant:small-caps;">[[User:Little Mountain 5|<fontspan colorstyle="color:black;">Little</fontspan>]][[User talk:Little Mountain 5|<fontspan colorstyle="color:red;">Mountain</fontspan>]][[Special:Contribs/Little Mountain 5|<fontspan colorstyle="color:#00008B;">5</fontspan>]]</b>'' 22:35, 30 December 2013 (UTC)
 
== Simplification of the current proof ==