You can use Stream.unfold/2: Stream.unfold({0,1}, fn {a,b} -> {a,{b,a+b}} end) |> Enum.take(10) [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] https://rosettacode.or

You can use Stream.unfold/2: Stream.unfold({0,1}, fn {a,b} -> {a,{b,a+b}} end) |> Enum.take(10) [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] https://rosettacode.org/wiki/Fibonacci_sequence#Elixir https://rosettacode.org/wiki/Fibonacci_sequence#Elixir