a(n) = A030067(2^n - 1) for n >= 1, where A030067 is the semi-Fibonacci numbers.

A129092

a(n) = A030067(2^n - 1) for n >= 1, where A030067 is the semi-Fibonacci numbers.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =16a(4) =69a(5) =430a(6) =4137a(7) =64436a(8) =1676353a(9) =74555322a(10) =5777029421a(11) =792086153688

External references