a(n) = Fibonacci(n) concatenated with Lucas(n).

Terms

a(0) =2a(1) =11a(2) =13a(3) =24a(4) =37a(5) =511a(6) =818a(7) =1329a(8) =2147a(9) =3476a(10) =55123a(11) =89199a(12) =144322a(13) =233521a(14) =377843a(15) =6101364a(16) =9872207a(17) =15973571a(18) =25845778a(19) =41819349a(20) =676515127a(21) =1094624476a(22) =1771139603a(23) =2865764079a(24) =46368103682a(25) =75025167761a(26) =121393271443a(27) =196418439204a(28) =317811710647