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 A378353 #4 Nov 28 2024 11:11:10 %S A378353 8,1,9,1,4,0,6,6,3,4,0,3,2,5,7,1,6,1,7,1,5,4,9,1,3,4,5,7,3,5,6,5,3,1, %T A378353 6,6,2,4,1,5,5,5,2,0,3,0,6,1,3,2,0,1,6,6,7,6,5,3,7,8,7,9,1,4,2,4,2,6, %U A378353 4,3,4,6,2,0,6,6,0,7,8,1,0,8,8,3,4,9,9,7,1,3 %N A378353 Decimal expansion of the inradius of a (small) triakis octahedron with unit shorter edge length. %C A378353 The (small) triakis octahedron is the dual polyhedron of the truncated cube. %F A378353 Equals sqrt(23/68 + 4*sqrt(2)/17) = sqrt(23/68 + A010487/17). %e A378353 0.81914066340325716171549134573565316624155520306132... %t A378353 First[RealDigits[Sqrt[23/68 + Sqrt[32]/17], 10, 100]] (* or *) %t A378353 First[RealDigits[PolyhedronData["TriakisOctahedron", "Inradius"], 10, 100]] %Y A378353 Cf. A378351 (surface area), A378352 (volume), A201488 (midradius), A378354 (dihedral angle). %Y A378353 Cf. A010487. %K A378353 nonn,cons,easy %O A378353 0,1 %A A378353 _Paolo Xausa_, Nov 23 2024