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 A258707 #12 Jul 02 2025 10:07:02 %S A258707 4,7,9,1,4,1,7,0,8,7,8,8,0,1,5,3,1,8,0,0,4,0,2,7,5,3,2,8,9,0,6,5,7,1, %T A258707 2,2,6,5,7,8,8,7,9,4,3,0,9,6,7,9,4,0,1,5,5,6,4,4,1,4,5,4,7,7,3,0,3,4, %U A258707 7,2,0,9,3,8,4,4,8,6,6,3,6,7,0,3,7,1,0,9,0,7,9,6,1,9,4,8,5,0,5,8,0,5,0,1 %N A258707 Decimal expansion of ((1/exp(1))^(1/exp(1)))^2. %H A258707 Alex Chin et al., <a href="http://www.jstor.org/stable/10.4169/amer.math.monthly.122.5.424">Pick a Tree-Any Tree</a>, The American Mathematical Monthly, 122.5 (2015): 424-432. %F A258707 Equals A072364^2. %e A258707 .47914170878801531800402753289065712265788794309679401556441... %t A258707 RealDigits[Exp[-1/Exp[1]]^2,10,104][[1]] (* _Stefano Spezia_, Jul 02 2025 *) %o A258707 (PARI) exp(-1/exp(1))^2 \\ _Michel Marcus_, Sep 30 2017 %Y A258707 Cf. A072364. %K A258707 nonn,cons %O A258707 0,1 %A A258707 _N. J. A. Sloane_, Jun 11 2015