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 A206788 #8 Mar 31 2012 10:28:58 %S A206788 1,1,2,3,5,7,12,17,29,41,53,94,147,200,253,306,359,665,971,1636,2301, %T A206788 2966,3631,4296,4961,5626,6291,6956,7621,8286,8951,9616,10281,10946, %U A206788 11611,12276,12941,13606,14271,14936,15601,16266,31867,47468,79335,111202,190537 %N A206788 Denominators of semiconvergents to log_2(3), which equals log(3)/log(2). %C A206788 These are also equal divisions of the octave that have good approximations of the 3rd harmonic (and hence other Pythagorean intervals such as 3/2, 4/3, 9/8 etc.). %C A206788 The semiconvergents are important musically as the cardinalities of MOS scales of Pythagorean tuning. %H A206788 Wikipedia, <a href="http://en.wikipedia.org/wiki/Continued_fraction#Semiconvergents">Definition of continued fraction semiconvergents</a> %Y A206788 Cf. A028507 (continued fraction expansion), A005664 (denominators of convergents). %K A206788 nonn,frac,easy %O A206788 1,3 %A A206788 _Keenan Pepper_, Feb 12 2012