Position of 2^n in A051037 (5-smooth numbers).

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =12a(5) =19a(6) =27a(7) =38a(8) =52a(9) =68a(10) =87a(11) =110a(12) =137a(13) =167a(14) =201a(15) =240a(16) =284a(17) =332a(18) =386a(19) =446a(20) =511a(21) =582a(22) =660a(23) =745a(24) =836a(25) =934a(26) =1041a(27) =1155a(28) =1277a(29) =1407