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 A226775 #34 Feb 03 2025 09:36:03 %S A226775 4,0,6,3,7,5,7,3,9,9,5,9,9,5,9,9,0,7,6,7,6,9,5,8,1,2,4,1,2,4,8,3,9,7, %T A226775 5,8,2,1,0,9,9,7,5,7,5,1,8,1,1,4,0,6,3,5,0,0,0,4,9,5,4,8,8,3,0,3,9,1, %U A226775 5,0,1,5,1,8,3,8,1,2,0,4,9,7,6,7,2,5,0,0,7,2,3,3,8,1,5,5,9,2,8,5,8,2,9,3,8 %N A226775 Decimal expansion of the number x other than -2 defined by x*exp(x) = -2/e^2. %H A226775 G. C. Greubel, <a href="/A226775/b226775.txt">Table of n, a(n) for n = 0..10000</a> %H A226775 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>. %F A226775 Equals -2*A106533. %F A226775 Equals LambertW(-2*exp(-2)). %e A226775 -0.4063757399599599076769581241248397582109975751811406350004954883.... %t A226775 RealDigits[N[ProductLog[-2/E^2], 105]][[1]] (* corrected by _Vaclav Kotesovec_, Feb 21 2014 *) %o A226775 (PARI) solve(x=-1, x=0, x*exp(x) + 2*exp(-2)) \\ _G. C. Greubel_, Nov 15 2017 %Y A226775 Cf. A106533, A187655, A187657, A217899, A217900, A226750, A243227, A245109, A247238, A258467, A337458. %K A226775 nonn,cons %O A226775 0,1 %A A226775 _José María Grau Ribas_, Jun 17 2013