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 A140242 #7 Nov 21 2024 07:47:31 %S A140242 8,1,2,7,5,5,5,6,1,3,6,8,6,6,0,6,5,8,7,7,4,3,4,9,3,8,0,6,5,8,6,1,8,5, %T A140242 2,5,3,4,2,0,0,3,5,0,0,3,9,7,0,3,8,3,2,9,5,8,5,7,0,0,9,5,9,9,3,2,1,8, %U A140242 3,0,2,1,7,0,0,0,4,0,8,3,2,0,7,8,7,7,1,1,8,5,9,8,7,0,1,4,7,2,9,1,7,5,7,9,6 %N A140242 Decimal expansion of arccos(11/16). %C A140242 Angle in radians of the larger acute angle of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths. %C A140242 A140240 + A140242 + A140244 = arccos(7/8) + arccos(11/16) + arccos(-1/4) = Pi. %H A140242 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A140242 arccos(11/16) = arcsin(3*sqrt(15)/16) = arctan(3*sqrt(15)/11). %e A140242 0.81275556136866065877434938065861852534200350039703832958570095993218302170... %t A140242 RealDigits[ArcCos[11/16],10,120][[1]] (* _Harvey P. Dale_, Aug 15 2024 *) %o A140242 (PARI) acos(11/16) %Y A140242 Cf. A140239, A140240, A140241, A140243, A140244, A140245, A140246, A140247, A140248, A140249. %K A140242 cons,nonn %O A140242 0,1 %A A140242 _Rick L. Shepherd_, May 14 2008