a(2)=7; thereafter a(n) = smallest number m such that a(n-1)+m = (a(n-1) followed by the leading digit of m).

A224758

a(2)=7; thereafter a(n) = smallest number m such that a(n-1)+m = (a(n-1) followed by the leading digit of m).

Terms

    a(0) =7a(1) =69a(2) =627a(3) =5648a(4) =50837a(5) =457537a(6) =4117837a(7) =37060536a(8) =333544827a(9) =3001903446a(10) =27017131016a(11) =243154179146

External references