0.2,0.16,0.072,0.0256,?

0.1*2*1, 0.01*4*4, 0.001*8*9, 0.0001*16*16. Decimal is increasing by 1 every term (getting multiplied with 0.1), the first multiplier is incrementing by multiples of two, and the second multiplier is consecutive squares. Answer would be 0.00001*32*25 = 0.00800.