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 A144606 #4 May 30 2025 13:37:51 %S A144606 0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1, %T A144606 0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0, %U A144606 1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,1,0,0,1,0,1 %N A144606 Christoffel word of slope 8/11. %F A144606 a(n) = a(n-19). - _R. J. Mathar_, May 30 2025 %F A144606 G.f.: -x^2*(1+x^2+x^5+x^7+x^9+x^12+x^14+x^16) / ( (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+x^13+x^14+x^15+x^16+x^17+x^18) ). - _R. J. Mathar_, May 30 2025 %Y A144606 See A144595 for further details. %K A144606 nonn,easy %O A144606 0,1 %A A144606 _N. J. A. Sloane_, Jan 13 2009