Indices of prime Fibonacci 5-step numbers, A001591.

Terms

a(0) =6a(1) =10a(2) =11a(3) =28a(4) =149a(5) =172a(6) =185a(7) =754a(8) =815a(9) =1510a(10) =1594a(11) =3160a(12) =3755a(13) =10654a(14) =12743a(15) =71807a(16) =155957