a(n) = Sum_{k=1..n} A325910(k) * 10^(2^(k-1)).A325493a(n) = Sum_{k=1..n} A325910(k) * 10^(2^(k-1)).Terms a(0) =0a(1) =10a(2) =1010a(3) =11011010External referencesoeis: A325493