Program to find the nth Kynea number | JAVA code to find nth Kynea number ; Function to calculate nth kynea number ; Firstly calculate 2 ^ n + 1 ; Now calculate ( 2 ^ n + 1 ) ^ 2 ; Now calculate ( ( 2 ^ n + 1 ) ^ 2 ) - 2 ; return nth Kynea number ; Driver Program ; print nth kynea number
class GFG { static long nthKyneaNumber ( int n ) { n = ( 1 << n ) + 1 ; n = n * n ; n = n - 2 ; return n ; } public static void main ( String [ ] args ) { int n = 2 ; System . out . println ( nthKyneaNumber ( n ) ) ; } }