A140117 - OEIS

%I #4 Apr 07 2020 22:09:38

%S 2,4,8,15,16,31,32,33,34,63,64,65,66,68,72,125,126,127,128,129,130,

%T 131,132,136,144,160,192,247,251,253,254,255,256,257,258,259,260,264,

%U 272,288,320,384,503,507,509,510,511,512,513,514,515,516,517,518,520,521

%N Numbers n for which A140116(n) uses fewer symbols than A007088(n).

%C The representation of n given by A140116(n) is more compact than the standard binary form of n for these numbers consisting of a sufficiently large proportion of 0's or of 1's among their bits.

%e See also examples for A140116. 2180 is a term here as 2180 = 100010000100 (base 2), which uses 12 symbols, but A140116(2180) = 10112111210, which uses only 11 symbols including the two delimiter symbols (for which 2 is used).

%Y Cf. A140116, A007088.

%K nonn

%O 1,1

%A _Rick L. Shepherd_, May 08 2008