APP description

Cubic sum is a kind of mathematical formula, which belongs to factorization, multiplication formula and identity, and is widely used. The cubic sum refers to a cubic number, plus another cubic number, which is the sum of them.

For example: \(13 + 23 + 33 + 43 = 1 + 8 + 27 + 64 = 100\).

Continuous natural number cube and formula: \(S(n)=13 + ... + n3 = [n/2(1 + n)]2\)

Usage example

Number of items: 5

Click "Calculate" to output the result

Cubic sum: 225