170, as 1/2 = 0.5, 2/10=0.2 , 3/30=0.1 , 4/68 = 0.0588 , 5/0.0256=170
130 n(n*n +1)
5+3=26 6+6=60 4+5=32 3+3=?
130 is the answer
1=02, 2=10, 3=30, 4=68, 5=130