Fibonacci sequence beginning 4, 30.

Terms

a(0) =4a(1) =30a(2) =34a(3) =64a(4) =98a(5) =162a(6) =260a(7) =422a(8) =682a(9) =1104a(10) =1786a(11) =2890a(12) =4676a(13) =7566a(14) =12242a(15) =19808a(16) =32050a(17) =51858a(18) =83908a(19) =135766a(20) =219674a(21) =355440a(22) =575114a(23) =930554a(24) =1505668a(25) =2436222a(26) =3941890a(27) =6378112a(28) =10320002a(29) =16698114