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 A192069 #6 May 04 2014 17:24:41 %S A192069 0,1,4,18,60,186,522,1380,3459,8321,19332,43629,96045,206953,437677, %T A192069 910549,1866952,3778561,7558953,14963504,29340482,57033862,109989752, %U A192069 210575822,400452782,756836537,1422191570,2658250044,4943946756,9152396892 %N A192069 (A192249)/5. %C A192069 See A192232, A192249. %F A192069 Conjecture: G.f.: x^2*(1-2*x+4*x^2-3*x^3+x^4) / ( (x-1)*(x^2+x-1)^5 ). - _R. J. Mathar_, May 04 2014 %t A192069 (See A192248.) %Y A192069 Cf. A192232, A192248, A192249. %K A192069 nonn %O A192069 1,3 %A A192069 _Clark Kimberling_, Jun 27 2011