The number of 1's in the n-th stage of A164349.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =12a(6) =23a(7) =46a(8) =91a(9) =182a(10) =364a(11) =727a(12) =1454a(13) =2908a(14) =5816a(15) =11631a(16) =23262a(17) =46523a(18) =93046a(19) =186092a(20) =372183a(21) =744366a(22) =1488732a(23) =2977463a(24) =5954926a(25) =11909851a(26) =23819702a(27) =47639404a(28) =95278807a(29) =190557614