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 A328228 #41 Oct 30 2019 13:28:27 %S A328228 1,2,147,5,1,3,5,4,4,1,1,159,6,1,1,1,4,1,2,1,2,3,1,8,15,47,1,103,1,1, %T A328228 1,1,2,1,1,1,1,1,1,2,1,10,3,1,2,1,2,4,1,1,1,9,28,2,4,2,2,5,1,3,1,1,2, %U A328228 1,1,1,52,6,2,6,1,5,94,3,6,26,1,6,5,1,3,109 %N A328228 Simple continued fraction expansion of 2^(7/12). %C A328228 2^(7/12) is the multiplier with respect to a base frequency to produce a perfect fifth interval in an equal tempered chromatic scale. %C A328228 This constant is of interest because it is close to the just intonation perfect fifth coefficient of 1.5 (continued fraction [1, 2]). It is the closest to just intonation of the chromatic scale divisions other than the octaves (2*frequency), and unison (1*frequency). The perfect fifth is the most consonant division of the chromatic scale. %H A328228 Wikipedia, <a href="https://en.wikipedia.org/wiki/Twelfth_root_of_two">Twelfth root of two</a> %H A328228 <a href="/index/Mu#music">Index entries for sequences based on music</a> %p A328228 convert(2^(7/12), confrac,100); # _Robert Israel_, Oct 24 2019 %t A328228 ContinuedFraction[2^(7/12), 82] (* _Michael De Vlieger_, Oct 25 2019 *) %o A328228 (PARI) contfrac(sqrtn(2^7, 12)) \\ _Michel Marcus_, Oct 09 2019 %Y A328228 Cf. A005664, A103922, A328229. %K A328228 nonn,cofr %O A328228 0,2 %A A328228 _Daniel Hoyt_, Oct 08 2019