Indices of A224078(n) in A025487.

Terms

a(0) =2a(1) =4a(2) =6a(3) =13a(4) =17a(5) =27a(6) =55a(7) =67a(8) =138a(9) =264a(10) =314a(11) =406a(12) =582a(13) =1046a(14) =1835a(15) =3609a(16) =16371a(17) =75611a(18) =118893a(19) =342363