a(n) = 100*a(n-1) + 11^(n-1) for n>0, a(0)=0.

A165155

a(n) = 100*a(n-1) + 11^(n-1) for n>0, a(0)=0.

Terms

    a(0) =0a(1) =1a(2) =111a(3) =11221a(4) =1123431a(5) =112357741a(6) =11235935151

External references