Find the number of values of 'n' for which `1! + 2! + 3! + ... + n!` is the square of a natural number.

Sum of square of n natural number

If m is the square of a natural number n, then n is

The mean of square of 1st n natural number is

The sum of the squares of first n natural numbers is -

Find the number of integers n for which (n)/(20-n) is the square of an integer.

The AM of the squares of the first 'n' natural numbers is

The arithmetic mean of the squares of first n natural numbers is

The arithmetic mean of the squares of first n natural numbers is

Find the 960^(th) and 961^(th) terms of the sequence given by: t_(n)={(n/(n/96-1), "if n is not the square of a natural number"),(6 1/2, "if n is the square of a natural number"):}