Program to find Nth term of series 4 , 14 , 28 , 46 , 68 , 94 , 124 , 158 , ... . . | calculate Nth term of series ; Driver code
< ? php function nthTerm ( $ n ) { return 2 * pow ( $ n , 2 ) + 4 * $ n - 2 ; } $ N = 4 ; echo nthTerm ( $ N ) . " STRNEWLINE " ; ? >