k-th lower twin prime, where k is the n-th Fibonacci number.

Terms

a(0) =3a(1) =3a(2) =5a(3) =11a(4) =29a(5) =71a(6) =179a(7) =347a(8) =857a(9) =1721a(10) =3359a(11) =6089a(12) =11831a(13) =22271a(14) =41957a(15) =77711a(16) =138401a(17) =249437a(18) =447791a(19) =799739a(20) =1399199a(21) =2459921a(22) =4312739a(23) =7581941a(24) =13233839a(25) =23019041a(26) =39921977a(27) =69112961a(28) =119168381a(29) =205190351