The gamma function has immense applications in various fields. However sometimes you don't have access to a calculator (like in certain exams), so the question is :
Which all values of the gamma function can be calculated(by hand, no calculator) that might prove to be useful in certain problems? Also show how you'd calculate it (by hand of course, no calculators)
Now I know the value of $\Gamma(\frac{1}{2})$ (which can be calculated by various methods (See here for methods to do that)) so values like $\Gamma(\frac{3}{2})$, $\Gamma(\frac{5}{2})$..... can be found by $\Gamma(n) = (n-1).\Gamma(n-1)$, I am interested in other values that can be calculated by hand.