Value of the concatenation of the first n+1 terms of A118605, seen as a binary number.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =9a(5) =18a(6) =36a(7) =72a(8) =145a(9) =291a(10) =582a(11) =1164a(12) =2329a(13) =4658a(14) =9316a(15) =18632a(16) =37264a(17) =74529a(18) =149059a(19) =298118a(20) =596236a(21) =1192472a(22) =2384944a(23) =4769888a(24) =9539777a(25) =19079555a(26) =38159110a(27) =76318220a(28) =152636440a(29) =305272880