Клей

local next
do
  local i = 1
  local pf = 1
  local ppf = 1
  function next()
    local result
    if i <= 2 then
      result = 1
    else
      result = pf + ppf
    end
    i = i + 1
    ppf = pf
    pf = result
    return result
  end
end
  txt=1
 for i = 1, 10 do txt = (txt..next()) end
 print (txt)