text: Find the Nth term of the series 1 + 2 + 6 + 15 + 31 + 56 + ... | Java program to find Nth term of the series : 1 + 2 + 6 + 15 + 31 + 56 + ... ; calculate Nth term of given series ; Driver code
code: import java . util . * ; import java . lang . * ; class GFG { static double Nth_Term ( int n ) { return ( 2 * Math . pow ( n , 3 ) - 3 * Math . pow ( n , 2 ) + n + 6 ) / 6 ; } static public void main ( String args [ ] ) { int N = 8 ; System . out . println ( Nth_Term ( N ) ) ; } }