A two-digit Look-and-Say sequence starting with 99: each term summarizes the increasing two-digit substrings of the previous term.

A221373

A two-digit Look-and-Say sequence starting with 99: each term summarizes the increasing two-digit substrings of the previous term.

Terms

    a(0) =99a(1) =199a(2) =119199a(3) =111219191199

External references