Answer:
function Result = OddDoubleFactorial(n)
% computes the double factorial of n using recursion
if n == 1
% save 1 as result if n is 1
Result = 1;
else
% recursive call to the function
Result = n * OddDoubleFactorial(n - 2);
end
% save the Result in a file
save recursion_check.dat Result -ascii -append
end