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 A247390 #9 Sep 08 2022 08:46:09
%S A247390 41,40,21,11,11,40,41,20,11,10,41,40,21,11,11,40,41,20,11,10,41,40,21,
%T A247390 11,11,40,41,20,11,10,41,40,21,11,11,40,41,20,11,10,41,40,21,11,11,40,
%U A247390 41,20,11,10,41,40,21,11,11,40,41,20,11,10,41,40,21,11,11,40
%N A247390 Base-n state complexity of partitioned deterministic finite automaton (PDFA) for the periodic sequence (12345678910)*.
%H A247390 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).
%F A247390 G.f.: x^2*(41 + 40*x + 21*x^2 + 11*x^3 + 11*x^4 + 40*x^5 + 41*x^6 + 20*x^7 + 11*x^8 + 10*x^9) / (1-x^10).
%t A247390 CoefficientList[Series [(41 + 40 x + 21 x^2 + 11 x^3 + 11 x^4 + 40 x^5 + 41 x^6 + 20 x^7 + 11 x^8 + 10 x^9)/(1 - x^10), {x, 0, 40}], x]
%o A247390 (Magma) &cat[[41,40,21,11,11,40,41,20,11,10]: n in [0..10]];
%Y A247390 Cf. A176059, A217515 - A217518, A247387.
%K A247390 nonn,easy
%O A247390 2,1
%A A247390 _Vincenzo Librandi_, Sep 16 2014