Bisection of A088567.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =9a(6) =13a(7) =18a(8) =24a(9) =31a(10) =40a(11) =50a(12) =63a(13) =77a(14) =95a(15) =114a(16) =138a(17) =163a(18) =194a(19) =226a(20) =266a(21) =307a(22) =357a(23) =408a(24) =471a(25) =535a(26) =612a(27) =690a(28) =785a(29) =881