Number of complete subsets of {1..n}.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =9a(6) =15a(7) =27a(8) =50a(9) =95a(10) =185a(11) =365a(12) =724a(13) =1441a(14) =2873a(15) =5735a(16) =11458a(17) =22902a(18) =45789a(19) =91561a(20) =183102a(21) =366180a(22) =732331a(23) =1464626a(24) =2929209a(25) =5858367a(26) =11716674a(27) =23433277a(28) =46866473a(29) =93732852