Program to find sum of series 1 + 2 + 2 + 3 + 3 + 3 + . . . + n | Function that find sum of series . ; Driver Code ; Function call
function sumOfSeries ( n ) { var sum = 0 ; for ( let i = 1 ; i <= n ; i ++ ) sum = sum + i * i ; return sum ; } var n = 10 ; document . write ( sumOfSeries ( n ) ) ;