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Mar 20th, 2019
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  1. local fib = {}
  2.  
  3. function fib_index(t, k)
  4. if k == 0 or k == 1 then
  5. t[k] = k
  6. else
  7. t[k] = t[k-1] + t[k-2]
  8. end
  9. return t[k]
  10. end
  11. setmetatable(fib, {__index = fib_index})
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