Number of acyclic tertiary alcohols with n carbon atoms.

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =27a(5) =79a(6) =234a(7) =686a(8) =2036a(9) =6080a(10) =18224a(11) =54920a(12) =166245a(13) =505201a(14) =1541014a(15) =4716540a(16) =14480699a(17) =44586619a(18) =137648341a(19) =425992838a(20) =1321362034a(21) =4107332002a(22) =12792440104a(23) =39915889304a(24) =124762916912a(25) =390594099694