%I
%S 1,11,101,111,1001,1011,1101,1111,10001,10011,10111,11001,11011,11101,
%T 11111,100001,100011,100111,101111,110001,110011,110111,111001,111011,
%U 111101,111111,1000001,1000011,1000111,1001111,1011111,1100001,1100011,1100111,1101111
%N Numbers from A193414 written in base 2.
%C For n>1 the structure of digits represents a valley. The first digit is equal to the last digit (1). The first digits are in nonincreasing order. The last digits are in nondecreasing order. The numbers may have more 0 digits. Sequence is infinite.
%e Illustration using 67 = (1000011)_2:
%e 1 . . . . 1 1
%e . 0 0 0 0 . .
%Y Cf. A193413 (Valley numbers written in base 10).
%K nonn,base
%O 1,2
%A _Jaroslav Krizek_, Jul 25 2011
