Question

describe a pattern in the sequence of numbers. what is the next number

256, 16, 4, 2

Answer 1

an = sqrt(an-1) perhaps? a1 = 256

Answer 2

\[\sqrt{2}\]

Answer 3

i gott the answer 1

Answer 4

as in 2^8 - 2^4 - 2^2 - 2^1 ... 2^0 ?
Mah.
Seems strange to me