a(n) = a(n-1)+a(m), where m=2n-2-2^(p+1) and 2^p<n-1<=2^(p+1), for n >= 4.

Terms

a(0) =1a(1) =3a(2) =4a(3) =7a(4) =14a(5) =17a(6) =24a(7) =41a(8) =82a(9) =85a(10) =92a(11) =109a(12) =150a(13) =235a(14) =344a(15) =579a(16) =1158a(17) =1161a(18) =1168a(19) =1185a(20) =1226a(21) =1311a(22) =1420a(23) =1655a(24) =2234a(25) =3395a(26) =4580a(27) =5891a(28) =7546a(29) =10941