Sum of even divisors of Fibonacci(n).

Terms

a(0) =0a(1) =0a(2) =2a(3) =0a(4) =0a(5) =14a(6) =0a(7) =0a(8) =36a(9) =0a(10) =0a(11) =390a(12) =0a(13) =0a(14) =744a(15) =0a(16) =0a(17) =5040a(18) =0a(19) =0a(20) =11816a(21) =0a(22) =0a(23) =154752a(24) =0a(25) =0a(26) =213840a(27) =0a(28) =0a(29) =1999872