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Line 83: For the induction principle, will be: P<sub>n</sub> = V<sub>n</sub>+(2n)/3+Σ<sub>n</sub>(from 1 to n-1)n P<sub>n</sub> = n<sup>3</sup>/3+2n/3+(n<sup>2</sup>+n)/2-n

Talk:Square pyramidal number: Difference between revisions