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 A382005 #7 Mar 19 2025 07:40:04 %S A382005 8,6,9,7,7,4,2,8,1,9,1,0,0,6,3,7,6,0,2,7,3,8,9,4,2,6,2,6,8,1,2,9,9,8, %T A382005 5,7,8,1,9,9,0,5,0,6,6,3,8,6,7,3,5,5,1,1,2,1,5,4,6,1,7,0,7,8,0,1,7,6, %U A382005 6,8,6,7,3,7,9,7,9,2,0,6,2,7,5,9,8,2,5,5,8,3 %N A382005 Decimal expansion of the isoperimetric quotient of a deltoidal icositetrahedron. %C A382005 For the definition of isoperimetric quotient of a solid, references and links, see A381684. %H A382005 Paolo Xausa, <a href="/A382005/b382005.txt">Table of n, a(n) for n = 0..10000</a> %H A382005 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A382005 Equals 36*Pi*A378391^2/(A378390^3). %F A382005 Equals (Pi/51)*sqrt((3407 + 2384*sqrt(2))/34) = (A000796/51)*sqrt((3407 + 2384*A002193)/34). %e A382005 0.8697742819100637602738942626812998578199050663867... %t A382005 First[RealDigits[Pi/51*Sqrt[(3407 + 2384*Sqrt[2])/34], 10, 100]] %Y A382005 Cf. A378390 (surface area), A378391 (volume). %Y A382005 Cf. A000796, A002193, A381684. %K A382005 nonn,cons,easy %O A382005 0,1 %A A382005 _Paolo Xausa_, Mar 17 2025