Erroneous version of A130131.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =11a(7) =23a(8) =47a(9) =105a(10) =231a(11) =532a(12) =1254a(13) =2872a(14) =6739a(15) =15955a(16) =37776a(17) =89779a(18) =213381a(19) =507949a(20) =1209184a(21) =2880382a(22) =6861351a(23) =16348887a(24) =38955354