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 A144600 #4 May 30 2025 13:31:13 %S A144600 0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0, %T A144600 0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0, %U A144600 0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,1,0 %N A144600 Christoffel word of slope 2/11. %F A144600 a(n) = a(n-13). - _R. J. Mathar_, May 30 2025 %F A144600 G.f.: -x^6*(1+x^2)*(x^4-x^2+1) / ( (x-1)*(1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12) ). - _R. J. Mathar_, May 30 2025 %Y A144600 See A144595 for further details. %K A144600 nonn,easy %O A144600 0,1 %A A144600 _N. J. A. Sloane_, Jan 13 2009