assignment3.erl

-module(assignment3).
-export([fib/1, pieces/1]).

fib(0) ->
    0;

fib(1) ->
    1;

fib(N) when N > 1 ->
    fib(N - 2) + fib(N - 1).

pieces(1) ->
  2;
pieces(N) when N > 0 ->
  pieces(N-1) + N.