Fibonacci sequence beginning 2, 24.

Terms

a(0) =2a(1) =24a(2) =26a(3) =50a(4) =76a(5) =126a(6) =202a(7) =328a(8) =530a(9) =858a(10) =1388a(11) =2246a(12) =3634a(13) =5880a(14) =9514a(15) =15394a(16) =24908a(17) =40302a(18) =65210a(19) =105512a(20) =170722a(21) =276234a(22) =446956a(23) =723190a(24) =1170146a(25) =1893336a(26) =3063482a(27) =4956818a(28) =8020300a(29) =12977118