The number of 0's in the n-th stage of A164349.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =11a(5) =21a(6) =42a(7) =83a(8) =166a(9) =331a(10) =661a(11) =1322a(12) =2643a(13) =5285a(14) =10569a(15) =21138a(16) =42275a(17) =84550a(18) =169099a(19) =338197a(20) =676394a(21) =1352787a(22) =2705573a(23) =5411146a(24) =10822291a(25) =21644582a(26) =43289163a(27) =86578325a(28) =173156650a(29) =346313299