This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A297185 #3 Dec 28 2017 11:47:34 %S A297185 0,0,0,0,1,2,6,10,21,38,72,128,244,446,836,1546,2899,5428,10256,19326, %T A297185 36672,69606,132656,253232,484776,929392,1785684,3435846,6622020, %U A297185 12779444,24696034,47777780,92537529,179406010,348154156,676210084,1314474934 %N A297185 One-half of the number of closed binary words of length n that are not privileged. %C A297185 Equals A297184(n)/2. See that entry for further information. %Y A297185 Cf. A297184. %K A297185 nonn %O A297185 0,6 %A A297185 _N. J. A. Sloane_, Dec 28 2017