3 (- n 4 ) 5n 2n July 8, 2019 16 32 64 128 3 (- n 4 )+ 5n 2n 2n 3 n 4 )+ 5 5n 7 5n 12 2n 3 n 4 (45 ^ n)/(3 ^ (2n - 1) * 5 ^ (n - 2)) 3 -5n+2n
