Driver Code
public static void main ( String [ ] args ) { long n = 3 ; System . out . print ( n + " th ▁ number ▁ : ▁ " ) ; System . out . println ( center_pentadecagonal_num ( n ) ) ; n = 10 ; System . out . print ( n + " th ▁ number ▁ : ▁ " ) ; System . out . println ( center_pentadecagonal_num ( n ) ) ; } }