a(n) = (Concatenation of A166064(1..n))/(Sum of A166064(1..n)).

A166066

a(n) = (Concatenation of A166064(1..n))/(Sum of A166064(1..n)).

Terms

    a(0) =1a(1) =10a(2) =34a(3) =114a(4) =604a(5) =38030a(6) =5432858a(7) =1686059380

External references