bn:03340418n
Noun Concept
Categories: Pyramids, Figurate numbers
EN
square pyramidal number  1+4+9+16+  pyramid number  square pyramidal numbers  Squares in a grid
EN
In mathematics, a pyramid number, or square pyramidal number, is a natural number that counts the number of stacked spheres in a pyramid with a square base. Wikipedia
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EN
In mathematics, a pyramid number, or square pyramidal number, is a natural number that counts the number of stacked spheres in a pyramid with a square base. Wikipedia