Concatenate pairs of successive Fibonacci numbers.

Terms

a(0) =1a(1) =11a(2) =12a(3) =23a(4) =35a(5) =58a(6) =813a(7) =1321a(8) =2134a(9) =3455a(10) =5589a(11) =89144a(12) =144233a(13) =233377a(14) =377610a(15) =610987a(16) =9871597a(17) =15972584a(18) =25844181a(19) =41816765a(20) =676510946a(21) =1094617711a(22) =1771128657a(23) =2865746368a(24) =4636875025a(25) =75025121393a(26) =121393196418