a(n) = sum of 2^(k-1) such that floor(n/prime(k)) is odd.

Terms

a(0) =0a(1) =1a(2) =3a(3) =2a(4) =6a(5) =5a(6) =13a(7) =12a(8) =14a(9) =11a(10) =27a(11) =24a(12) =56a(13) =49a(14) =55a(15) =54a(16) =118a(17) =117a(18) =245a(19) =240a(20) =250a(21) =235a(22) =491a(23) =488a(24) =492a(25) =461a(26) =463a(27) =454a(28) =966a(29) =961