a(n) is the integer whose binary expansion starts with 1 and such that the runs of identical bits have lengths n, n-1, n-2, ..., 3, 2, 1.

A371033

a(n) is the integer whose binary expansion starts with 1 and such that the runs of identical bits have lengths n, n-1, n-2, ..., 3, 2, 1.

Terms

    a(0) =1a(1) =6a(2) =57a(3) =966a(4) =31801a(5) =2065350a(6) =266370105a(7) =68453106630

External references