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 A202823 #6 Mar 30 2012 19:00:28 %S A202823 1,2,3,5,6,10,13,14,19,20,21,28,29,30,33,54,59,60,61,62,67,73,109,114, %T A202823 128,143,263,298,453,473,478,512,519,555,571,789,872,1045,1586,1597, %U A202823 1890,1901,2085,2096,2130,2283,2374,2376,3292,3412,3552,3895,4038,4250 %N A202823 Numbers n such that A004001(n) = A005185(n), where A004001 = Hofstadter-Conway $10000 sequence and A005185 = Hofstadter Q-sequence. %e A202823 Number 13 is in sequence because A004001(13) = A005185(13) = 8. %Y A202823 Cf. A004001, A005185. %K A202823 nonn %O A202823 1,2 %A A202823 _Jaroslav Krizek_, Dec 25 2011