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 A140245 #3 Mar 30 2012 17:36:44 %S A140245 1,0,4,4,7,7,5,1,2,1,8,5,9,2,9,9,2,3,8,7,8,7,7,1,0,3,4,7,9,9,1,2,7,1, %T A140245 6,6,0,0,5,1,3,1,5,9,7,6,2,4,5,5,6,6,1,6,4,7,6,0,5,0,1,1,8,0,0,8,8,5, %U A140245 1,2,9,3,5,8,0,7,2,7,4,5,1,5,6,7,4,5,8,9,0,9,7,9,3,3,3,5,7,1,8,3,2,5,8,5,8 %N A140245 Decimal expansion of 180*arccos(-1/4)/Pi. %C A140245 Angle in degrees of the obtuse angle of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths. %C A140245 A140241 + A140243 + A140245 = 180. %F A140245 180*arccos(-1/4)/Pi = 180*A140244/Pi. %e A140245 104.477512185929923878771034799127166005131597624556616476050118008851293580... %o A140245 (PARI) 180*acos(-1/4)/Pi %Y A140245 Cf. A140239, A140240, A140241, A140242, A140243, A140244, A140246, A140247, A140248, A140249. %K A140245 cons,nonn %O A140245 3,3 %A A140245 _Rick L. Shepherd_, May 14 2008