The generalized Conway-Guy sequence w^{-6}.

Terms

a(0) =0a(1) =5a(2) =9a(3) =10a(4) =11a(5) =18a(6) =31a(7) =57a(8) =104a(9) =192a(10) =366a(11) =701a(12) =1353a(13) =2649a(14) =5194a(15) =10196a(16) =20026a(17) =39686a(18) =79006a(19) =157316a(20) =313279