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 A378013 #15 Feb 05 2025 00:16:04 %S A378013 1,7,1,8,7,9,6,4,5,4,5,0,5,0,9,3,2,0,6,8,7,2,5,2,3,9,4,4,9,5,2,6,3,9, %T A378013 2,9,9,4,7,5,2,1,4,1,1,2,9,5,4,7,9,0,2,2,4,0,6,8,6,2,1,9,7,2,8,8,4,0, %U A378013 0,0,8,1,9,9,0,0,2,7,8,9,1,3,1,4,5,0,7,9,1,8,9,4,0,5,3,2,5,6,9,2 %N A378013 Decimal expansion of A^2, where A is the lemniscate constant (A085565). %F A378013 Equals A085565^2. %F A378013 Equals Gamma(1/4)^4 / (32*Pi). - _Vaclav Kotesovec_, Nov 14 2024 %e A378013 1.71879645450509320687252394495... %t A378013 RealDigits[EllipticK[-1]^2,10,100][[1]] %o A378013 (Magma) C<i> := ComplexField(); [(Gamma(1/4)^2/(4*Sqrt(2*Pi(C))))^2]; %o A378013 (PARI) ellK(I)^2 \\ _Charles R Greathouse IV_, Feb 05 2025 %Y A378013 Cf. A085565. %K A378013 nonn,cons %O A378013 1,2 %A A378013 _Vincenzo Librandi_, Nov 14 2024