%I #23 Apr 23 2020 04:23:11

%S 1,11,101,111,1001,1011,1101,1111,10001,10011,10101,10111,11001,11011,

%T 11101,11111,100001,100011,100101,100111,101001,101011,101101,101111,

%U 110001,110011,110101,110111,111001,111011,111101,111111,1000001

%N Odd positive integers in base 2 (bisection of A007088).

%C List of binary vectors that begin and end with 1.

%H N. J. A. Sloane, <a href="/A099821/b099821.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Ar#2-automatic">Index entries for 2-automatic sequences</a>.

%p seq(convert(2*n-1,binary),n=1..37); # _Emeric Deutsch_, Dec 15 2004

%t FromDigits/@IntegerDigits[Range[1,71,2],2] (* _Harvey P. Dale_, Apr 05 2019 *)

%o (PARI) a(n) = fromdigits(binary(2*n-1), 10); \\ _Michel Marcus_, Apr 23 2020

%Y Cf. A007088, A099820.

%K nonn,base,easy

%O 1,2

%A _N. J. A. Sloane_, Nov 19 2004

%E More terms from _Emeric Deutsch_, Dec 15 2004