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 A381685 #10 Mar 05 2025 09:26:17 %S A381685 7,4,1,2,1,0,7,0,7,4,9,6,4,3,8,4,6,3,3,6,9,8,7,2,6,2,8,3,9,1,1,0,4,1, %T A381685 4,8,2,7,3,2,8,5,3,2,8,4,6,1,6,9,7,0,5,2,2,4,0,4,3,5,6,2,4,9,6,4,2,3, %U A381685 6,0,6,9,2,2,2,6,1,9,9,5,3,0,4,8,9,1,5,6,9,7 %N A381685 Decimal expansion of the isoperimetric quotient of a cuboctahedron. %C A381685 For the definition of isoperimetric quotient of a solid, references and links, see A381684. %H A381685 Paolo Xausa, <a href="/A381685/b381685.txt">Table of n, a(n) for n = 0..10000</a> %F A381685 Equals 3600*Pi*A020775^2/(A343199^3). %F A381685 Equals 25*Pi/((3 + sqrt(3))^3) = 25*A000796/((3 + A002194)^3). %e A381685 0.74121070749643846336987262839110414827328532846... %t A381685 First[RealDigits[25*Pi/(3 + Sqrt[3])^3, 10, 100]] %Y A381685 Cf. A020775 (volume, with offset 1), A343199 (surface area). %Y A381685 Cf. A000796, A002194, A381684. %K A381685 nonn,cons,easy %O A381685 0,1 %A A381685 _Paolo Xausa_, Mar 04 2025