Bisection of A136704 (divided by 2).

Terms

a(0) =0a(1) =1a(2) =6a(3) =39a(4) =273a(5) =2013a(6) =15330a(7) =119572a(8) =949560a(9) =7646457a(10) =62263994a(11) =511647711a(12) =4236443046a(13) =35303691969a(14) =295820592090