Computes value of first fibonacci numbers and stores the even - indexed sum
def calculateEvenSum ( n ) : NEW_LINE INDENT if n <= 0 : NEW_LINE INDENT return 0 NEW_LINE DEDENT fibo = [ 0 ] * ( 2 * n + 1 ) NEW_LINE fibo [ 0 ] , fibo [ 1 ] = 0 , 1 NEW_LINE DEDENT