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 A386002 #10 Jul 19 2025 10:11:20 %S A386002 1,3,9,5,0,3,7,6,2,3,6,3,5,1,9,6,5,8,2,1,8,6,1,4,9,7,1,3,7,3,0,7,6,3, %T A386002 7,4,1,8,8,4,3,1,9,6,7,7,8,3,4,7,7,4,0,0,9,0,1,0,4,0,1,6,7,4,7,4,3,9, %U A386002 6,2,9,7,6,5,1,6,2,0,2,0,1,5,5,6,6,7,3,6,4,9 %N A386002 Decimal expansion of the volume of an augmented tridiminished icosahedron with unit edge. %C A386002 The augmented tridiminished icosahedron is Johnson solid J_64. %H A386002 Paolo Xausa, <a href="/A386002/b386002.txt">Table of n, a(n) for n = 1..10000</a> %H A386002 Wikipedia, <a href="https://en.wikipedia.org/wiki/Augmented_tridiminished_icosahedron">Augmented tridiminished icosahedron</a>. %F A386002 Equals (15 + 2*sqrt(2) + 7*sqrt(5))/24 = (15 + A010466 + 7*A002163)/24. %F A386002 Equals A102208 - 3*A179552 + A020829 = A386000 + A020829. %F A386002 Equals the largest root of 2304*x^4 - 5760*x^3 + 3376*x^2 + 280*x - 49. %e A386002 1.3950376236351965821861497137307637418843196778... %t A386002 First[RealDigits[(15 + Sqrt[8] + 7*Sqrt[5])/24, 10, 100]] (* or *) %t A386002 First[RealDigits[PolyhedronData["J64", "Volume"], 10, 100]] %Y A386002 Cf. A386003 (surface area). %Y A386002 Cf. A002163, A010466, A020829, A102208, A179552, A385857, A386000. %K A386002 nonn,cons,easy %O A386002 1,2 %A A386002 _Paolo Xausa_, Jul 18 2025