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 A378206 #8 Feb 11 2025 14:40:50 %S A378206 5,3,3,0,0,1,7,9,0,8,8,9,0,2,6,0,8,5,7,4,6,0,9,4,3,3,1,0,8,4,5,9,8,4, %T A378206 4,0,9,7,5,9,3,5,0,4,0,1,6,0,4,2,4,6,7,6,5,4,6,1,0,2,4,8,7,6,1,5,5,7, %U A378206 0,9,8,0,9,9,4,6,8,6,3,3,1,9,8,6,6,0,4,0,4,5 %N A378206 Decimal expansion of the inradius of a triakis tetrahedron with unit shorter edge length. %C A378206 The triakis tetrahedron is the dual polyhedron of the truncated tetrahedron. %H A378206 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>. %F A378206 Equals 5/(2*sqrt(22)) = 5/A010539. %e A378206 0.53300179088902608574609433108459844097593504016042... %t A378206 First[RealDigits[5/Sqrt[88], 10, 100]] (* or *) %t A378206 First[RealDigits[PolyhedronData["TriakisTetrahedron", "Inradius"], 10, 100]] %Y A378206 Cf. A378204 (surface area), A378205 (volume), A378207 (midradius), A378208 (dihedral angle). %Y A378206 Cf. A010539. %K A378206 nonn,cons,easy %O A378206 0,1 %A A378206 _Paolo Xausa_, Nov 21 2024