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 A380738 #6 Feb 02 2025 04:18:46 %S A380738 1,5,2,1,9,6,1,3,8,1,9,5,5,7,8,1,6,6,3,1,6,0,7,7,7,2,7,1,8,8,3,3,8,4, %T A380738 3,8,2,1,0,0,6,1,8,3,3,0,6,2,7,9,6,9,0,5,0,1,5,0,7,2,0,9,5,4,1,5,5,8, %U A380738 0,6,3,1,4,3,1,9,1,0,9,3,0,8,1,9,7,8,8,4,2,5 %N A380738 Decimal expansion of the largest vertex angle, in radians, in a disdyakis dodecahedron face. %C A380738 A disdyakis dodecahedron face is a scalene triangle with three acute angles. %H A380738 Paolo Xausa, <a href="/A380738/b380738.txt">Table of n, a(n) for n = 1..10000</a> %H A380738 Wikipedia, <a href="https://en.wikipedia.org/wiki/Disdyakis_dodecahedron">Disdyakis dodecahedron</a>. %F A380738 Equals arccos(1/6 - sqrt(2)/12) = arccos(1/6 - A020829). %F A380738 Equals Pi - A380736 - A380737. %e A380738 1.5219613819557816631607772718833843821006183306... %t A380738 First[RealDigits[ArcCos[1/6 - Sqrt[2]/12], 10, 100]] %Y A380738 Cf. A380736 (face smallest angle), A380737 (face medium angle). %Y A380738 Cf. A020829, A378393, A378712, A378713, A378714, A378715, A380734, A380735. %K A380738 nonn,cons,easy %O A380738 1,2 %A A380738 _Paolo Xausa_, Feb 01 2025