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Line 35: :https://sites.google.com/site/leggendoarchimede/ ::On page 07 of that site, in the article "Numeri e geometria", is exposed an ingenious method to derive the first formula of this article, and others of the same type, using geometric patterns in the spaces of 2 and 3 dimensions. Luciano Ancora - 11:22, 5 mag 2013 <small><span class="autosigned">— Preceding [[Wikipedia:Signatures\|unsigned]] comment added by [[User:Ancora Luciano\|Ancora Luciano]] ([[User talk:Ancora Luciano\|talk]] • [[Special:Contributions/Ancora Luciano\|contribs]]) </span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot--> ~~Luciano Ancora - 11:22, 5 mag 2013~~

Talk:Square pyramidal number: Difference between revisions