Position of rightmost 0 in 2^n increases.

Terms

a(0) =10a(1) =20a(2) =30a(3) =40a(4) =46a(5) =68a(6) =93a(7) =95a(8) =129a(9) =176a(10) =229a(11) =700a(12) =1757a(13) =1958a(14) =7931a(15) =57356a(16) =269518a(17) =411658a(18) =675531a(19) =749254a(20) =4400728a(21) =18894561a(22) =33250486a(23) =58903708a(24) =297751737a(25) =325226398a(26) =781717865a(27) =18504580518a(28) =27893737353a(29) =103233492954