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 A164471 #13 Apr 04 2024 04:27:04 %S A164471 13,21,35,59,99,167,283,479,811,1375,2331,3951,6699,11359,19259,32655, %T A164471 55371,93887,159195,269935,457707,776095,1315963,2231375,3783563, %U A164471 6415487,10878235,18445359,31276331,53032799,89923515,152476175,258541771 %N A164471 Number of binary strings of length n with no substrings equal to 0001 0101 or 1000. %H A164471 R. H. Hardin, <a href="/A164471/b164471.txt">Table of n, a(n) for n=4..500</a> %H A164471 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1,2,-2). %F A164471 G.f.: -x^4*(-13+5*x-6*x^2+16*x^3) / ( (x-1)*(2*x^3+x-1) ). - _R. J. Mathar_, Jan 19 2011 %K A164471 nonn,easy %O A164471 4,1 %A A164471 _R. H. Hardin_, Aug 14 2009