Drivers Code
public static void main ( String [ ] args ) { long n = 5 ; System . out . println ( n + " th ▁ " + " Hexadecagonal ▁ number ▁ : ▁ " + hexadecagonalNum ( n ) ) ; n = 9 ; System . out . println ( n + " th ▁ " + " Hexadecagonal ▁ number ▁ : ▁ " + hexadecagonalNum ( n ) ) ; } }