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 A381692 #8 Mar 09 2025 18:18:35 %S A381692 7,9,4,0,5,4,8,9,4,3,0,3,7,9,7,9,8,1,3,0,1,8,4,2,8,2,7,2,8,2,2,5,8,1, %T A381692 8,0,8,2,7,1,1,9,2,9,9,3,7,8,5,4,5,2,0,2,4,7,9,4,1,6,1,2,4,2,0,8,2,9, %U A381692 6,3,7,3,3,7,5,7,5,7,1,4,0,1,8,6,6,5,1,4,5,6 %N A381692 Decimal expansion of the isoperimetric quotient of a truncated dodecahedron. %C A381692 For the definition of isoperimetric quotient of a solid, references and links, see A381684. %H A381692 Paolo Xausa, <a href="/A381692/b381692.txt">Table of n, a(n) for n = 0..10000</a> %H A381692 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A381692 Equals 36*Pi*A377695^2/(A377694^3). %F A381692 Equals (Pi/20)*(99 + 47*sqrt(5))^2/((sqrt(3) + 6*sqrt(5 + 2*sqrt(5)))^3) = (A000796/20)*(99 + 47*A002163)^2/((A002194 + 6*sqrt(5 + A010476))^3). %e A381692 0.7940548943037979813018428272822581808271192993785... %t A381692 First[RealDigits[Pi/20*(99 + 47*Sqrt[5])^2/(Sqrt[3] + 6*Sqrt[5 + Sqrt[20]])^3, 10, 100]] %Y A381692 Cf. A377694 (surface area), A377695 (volume). %Y A381692 Cf. A000796, A002163, A002194, A010476, A381684. %K A381692 nonn,cons,easy %O A381692 0,1 %A A381692 _Paolo Xausa_, Mar 07 2025