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Line 71: # Counting the number of triangles in the saw-tooth figure that encloses the parabolic segment and ''discovery'' that, for each number n of divisions, this number is the ''square pyramidal number'' ! The rest came by itself.--[[User:Ancora Luciano\|Ancora Luciano]] ([[User talk:Ancora Luciano\|talk]]) 18:47, 14 May 2013 (UTC) ~~The rest came by itself.~~

Talk:Square pyramidal number: Difference between revisions