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 A247576 #7 Sep 20 2014 14:11:36 %S A247576 2,4,8,6,7,7,16,19,11,55,25,156,14,16,32,136,34,342,41 %N A247576 Base-15 state complexity of partitioned deterministic finite automaton (PDFA) for the periodic sequence (123...n)*. %H A247576 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 A247576 Cf. similar sequences listed in A247566. %K A247576 nonn,more %O A247576 2,1 %A A247576 _Vincenzo Librandi_, Sep 20 2014