a(1) = a(2) = 1; a(n) = a(n-1) + concatenation of a(n-2) and a(n-1).

A070312

a(1) = a(2) = 1; a(n) = a(n-1) + concatenation of a(n-2) and a(n-1).

Terms

    a(0) =1a(1) =1a(2) =12a(3) =124a(4) =12248a(5) =12424496

External references