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 A247572 #7 Sep 20 2014 14:12:09 %S A247572 2,6,8,5,12,21,16,54,10,12,24,156,42,30,64,272,108,57,40 %N A247572 Base-11 state complexity of partitioned deterministic finite automaton (PDFA) for the periodic sequence (123...n)*. %H A247572 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 A247572 Cf. similar sequences listed in A247566. %K A247572 nonn,more %O A247572 2,1 %A A247572 _Vincenzo Librandi_, Sep 20 2014