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 A386464 #10 Jul 28 2025 10:54:02 %S A386464 8,7,3,6,3,7,0,9,8,7,7,7,0,4,0,7,4,6,8,5,6,1,9,1,0,0,1,2,5,1,4,1,6,7, %T A386464 7,1,0,1,0,0,5,8,5,5,1,1,5,4,6,6,7,2,9,2,4,9,8,1,9,0,0,2,5,5,2,8,9,6, %U A386464 3,8,2,0,7,7,4,9,8,8,8,2,5,4,6,4,7,5,2,2,5,1 %N A386464 Decimal expansion of the volume of an augmented truncated dodecahedron with unit edges. %C A386464 The augmented truncated dodecahedron is Johnson solid J_68. %H A386464 Paolo Xausa, <a href="/A386464/b386464.txt">Table of n, a(n) for n = 2..10000</a> %H A386464 Wikipedia, <a href="https://en.wikipedia.org/wiki/Augmented_truncated_dodecahedron">Augmented truncated dodecahedron</a>. %F A386464 Equals 505/12 + 81*sqrt(5)/4 = 505/12 + 81*A204188. %F A386464 Equals A377695 + A179590. %F A386464 Equals the largest root of 36*x^2 - 3030*x - 10055. %e A386464 87.3637098777040746856191001251416771010058551... %t A386464 First[RealDigits[505/12 + 81/4*Sqrt[5], 10, 100]] (* or *) %t A386464 First[RealDigits[PolyhedronData["J68", "Volume"], 10, 100]] %Y A386464 Cf. A386465 (surface area). %Y A386464 Cf. A179590, A204188, A377695, A386411, A386459, A386466, A386544. %K A386464 nonn,cons,easy %O A386464 2,1 %A A386464 _Paolo Xausa_, Jul 25 2025