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 A119256 #3 Mar 30 2012 18:34:45 %S A119256 1,4,7,10,13,23,40,63,176,239,329,568,10381,49128,60974,281746,342720, %T A119256 7484108,11452573,18936681,44390284,55842857 %N A119256 Successively better denominators for estimating base 10 logs of 2, 3, 4, 5, 6, 7, 8 and 9. "Better" is defined by the RMS error of the best numerators for each given denominator. %H A119256 <a href="http://mcraefamily.com/MathHelp/MentalMathLog.htm">Estimating Log Base 10</a> %H A119256 Karl's Calculus Tutor: <a href="http://www.karlscalculus.org/l6_3-2.html">Log base 10 tricks (to the 40th degree)</a> %e A119256 a(6)=40 because the square root of the mean of (12-40*log(2))^2, (19-40*log(3))^2, (24-40*log(4))^2, (28-40*log(5))^2, (31-40*log(6))^2, (34-40*log(7))^2, (36-40*log(8))^2 and (38-40*log(9))^2 is smaller than the RMS values obtained using any denominator smaller than 40. %K A119256 base,nonn %O A119256 0,2 %A A119256 _Graeme McRae_, May 10 2006