1, 1, 2, 3, 5, 8, 13, 21, ...
u(n) = (u(n-1)) + (u(n-2)) is the pattern I think,
But yes agreed if you got this on test day you might as well go and open an umbrella inside, couldn't really get any more bad luck than you already have hahahaha.
What kind of mad student will think, after everything else, all in 30s, "Damn I forgot the Fibonacci sequence."?
Don't think this is equivalent of the day anyone as on the day for me it was very simple patterns mainly, so if you find a basic pattern, go with the damn thing!!