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 A182567 #17 Oct 13 2023 07:36:08 %S A182567 5,0,3,8,7,8,4,8,7,9,8,4,8,5,6,7,2,4,5,4,3,5,7,4,2,8,7,3,3,5,5,8,8,3, %T A182567 2,2,1,8,9,0,8,8,7,9,4,5,8,6,1,9,0,1,0,4,8,5,6,4,7,0,7,6,8,5,5,8,3,3, %U A182567 7,9,8,4,9,4,4,3,7,8,7,1,0,5,8,6,8,6,0,2,2,9,8,1,9,9,1,5,9,2,1,9,4,0,8 %N A182567 Decimal expansion of Madelung constant (negated) for calcium fluoride CaF_2. %H A182567 Leslie Glasser, <a href="https://doi.org/10.1021/ic2023852">Solid-State Energetics and Electrostatics: Madelung Constants and Madelung Energies</a>, Inorg. Chem., 2012, 51 (4), 2420-2424. %H A182567 Wikipedia, <a href="https://en.wikipedia.org/wiki/Fluorite_structure">Fluorite structure</a>. %F A182567 This constant = sqrt(3)/2 * A085469 + 2 * A181152. [Glasser] - _Andrey Zabolotskiy_, Oct 12 2023 %e A182567 -5.0387848798... %Y A182567 Cf. A085469, A181152, A182565, A182566. %K A182567 nonn,cons %O A182567 1,1 %A A182567 _N. J. A. Sloane_, May 05 2012 %E A182567 More terms using the formula added by _Andrey Zabolotskiy_, Oct 12 2023