a(1)=1, and for n>1, a(n) = a(n-1) concatenated with the length of the decimal representation of a(n-1).

A383429

a(1)=1, and for n>1, a(n) = a(n-1) concatenated with the length of the decimal representation of a(n-1).

Terms

    a(0) =1a(1) =11a(2) =112a(3) =1123a(4) =11234a(5) =112345a(6) =1123456a(7) =11234567a(8) =112345678a(9) =1123456789a(10) =112345678910

External references