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 A117558 #5 Oct 02 2013 16:16:06 %S A117558 1,2,7,8,24,37,46,58,130,198,224,270,494,1506,2684,5585,6079,14618, %T A117558 20203,81860,87939,96478 %N A117558 Equal divisions of the octave of decreasing thirteen-limit Pepper ambiguity. %C A117558 We may define the n-limit Pepper ambiguity, for any odd number n greater than one, as the maximum of the ratios of the errors of the nearest approximation to the members of the n-limit tonality diamond to the next nearest. %H A117558 Wikipedia, <a href="http://en.wikipedia.org/wiki/Tonality_diamond">Tonality diamond</a> %Y A117558 Cf. A117554, A117555, A117556, A117557, A117559, A005664, A117536, A117538. %K A117558 more,nonn %O A117558 0,2 %A A117558 _Gene Ward Smith_, Mar 28 2006