Find the sum of the first N Centered Pentagonal Number | Java program to find the sum of the first N centered pentagonal numbers ; Function to find the Centered_Pentagonal number ; Formula to calculate nth Centered_Pentagonal number & return it into main function . ; Function to find the sum of the first N Centered_Pentagonal numbers ; To get the sum ; Iterating through the range 1 to N ; Driver Code ; Display first Nth Centered_Pentagonal number
class GFG { static int Centered_Pentagonal_num ( int n ) { return ( 5 * n * n - 5 * n + 2 ) / 2 ; } static int sum_Centered_Pentagonal_num ( int n ) { int summ = 0 ; for ( int i = 1 ; i < n + 1 ; i ++ ) { summ += Centered_Pentagonal_num ( i ) ; } return summ ; } public static void main ( String [ ] args ) { int n = 5 ; System . out . print ( ( sum_Centered_Pentagonal_num ( n ) ) ) ; } }