Find the Nth term of the series 14 , 28 , 20 , 40 , ... . . | Function to find the N - th term ; initializing the 1 st number ; loop from 2 nd term to nth term ; if i is even , double the previous number ; if i is odd , subtract 8 from previous number ; Driver Code
< ? php function findNth ( $ N ) { $ b = 14 ; for ( $ i = 2 ; $ i <= $ N ; $ i ++ ) { if ( $ i % 2 == 0 ) $ b = $ b * 2 ; else $ b = $ b - 8 ; } return $ b ; } $ N = 6 ; echo findNth ( $ N ) ; ? >