a(n) = k where R(k+8) = 2.

A086948

a(n) = k where R(k+8) = 2.

Terms

    a(0) =12a(1) =192a(2) =1992a(3) =19992a(4) =199992a(5) =1999992a(6) =19999992a(7) =199999992a(8) =1999999992a(9) =19999999992a(10) =199999999992

External references