a(2)=5; thereafter a(n) = smallest number m such that a(n-1)+m = (a(n-1) followed by the leading digit of m).

A224756

a(2)=5; 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) =5a(1) =49a(2) =445a(3) =4009a(4) =36084a(5) =324759a(6) =2922833a(7) =26305499a(8) =236749493a(9) =2130745439a(10) =19176708952a(11) =172590380569

External references