Concatenate prime factorization as in A080670, but write everything in binary.

Terms

a(0) =1a(1) =10a(2) =11a(3) =1010a(4) =101a(5) =1011a(6) =111a(7) =1011a(8) =1110a(9) =10101a(10) =1011a(11) =101011a(12) =1101a(13) =10111a(14) =11101a(15) =10100a(16) =10001a(17) =101110a(18) =10011a(19) =1010101a(20) =11111a(21) =101011a(22) =10111a(23) =101111a(24) =10110a(25) =101101a(26) =1111a(27) =1010111a(28) =11101a(29) =1011101