text: Megagon number | Java program for the above approach ; Function to find the nth Megagon Number ; Driver code
code: class GFG { static int MegagonNum ( int n ) { return ( 999998 * n * n - 999996 * n ) / 2 ; } public static void main ( String [ ] args ) { int n = 3 ; System . out . print ( MegagonNum ( n ) ) ; } }