In an organization, Mr. Kabir Khan is working as a junior scientific officer his boss has given him the following computational task to find out the values of f(2,3, and 4) in a recursive way. He has given with few additional information/parameters; this might help him to find the solution. These are following values for f, 0 = -1, 1 = 2 and for n can be any positive integers, and f(n+1) = f(n) + 3 f(n-1).

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