Fibonacci sequence beginning 4, 14.

Terms

a(0) =4a(1) =14a(2) =18a(3) =32a(4) =50a(5) =82a(6) =132a(7) =214a(8) =346a(9) =560a(10) =906a(11) =1466a(12) =2372a(13) =3838a(14) =6210a(15) =10048a(16) =16258a(17) =26306a(18) =42564a(19) =68870a(20) =111434a(21) =180304a(22) =291738a(23) =472042a(24) =763780a(25) =1235822a(26) =1999602a(27) =3235424a(28) =5235026a(29) =8470450