O.g.f.: A(x) = Sum_{n>=0} x^n*Product_{k=0..n} (1 + 2^k*x).
A124384
O.g.f.: A(x) = Sum_{n>=0} x^n*Product_{k=0..n} (1 + 2^k*x).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =30a(5) =110a(6) =494a(7) =2734a(8) =18734a(9) =159278a(10) =1685550a(11) =22268974a(12) =367653934a(13) =7597868078a(14) =196929315886
External references
- oeis: A124384