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 A247571 #7 Sep 20 2014 14:12:17 %S A247571 3,3,9,6,7,42,25,9,11,22,23,78,85,16,59,272,19,342,31 %N A247571 Base-10 state complexity of partitioned deterministic finite automaton (PDFA) for the periodic sequence (123...n)*. %H A247571 Klaus Sutner and Sam Tetruashvili, <a href="http://www.cs.cmu.edu/~sutner/papers/auto-seq.pdf">Inferring automatic sequences</a> (see table on the p. 5). %Y A247571 Cf. similar sequences listed in A247566. %K A247571 nonn,more %O A247571 2,1 %A A247571 _Vincenzo Librandi_, Sep 20 2014