Driver Code
public static void main ( String args [ ] ) { int n = 2 ; System . out . print ( n + " th ▁ centered ▁ " + " hexadecagonal ▁ number : ▁ " ) ; System . out . println ( center_hexadecagonal_num ( n ) ) ; n = 12 ; System . out . print ( n + " th ▁ centered ▁ " + " hexadecagonal ▁ number : ▁ " ) ; System . out . println ( center_hexadecagonal_num ( n ) ) ; } }