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 A100085 #19 Jan 20 2018 22:24:03
%S A100085 1,2,5,0,0,2,1,4,3,3,4,7,0,5,0,7,5,4,4,5,8,1,6,1,8,6,5,5,6,9,2,7,3,0,
%T A100085 5,1,6,5,7,7,5,3,4,7,0,6,2,1,8,8,6,5,7,6,8,3,0,7,4,2,9,2,0,3,7,0,2,7,
%U A100085 4,9,6,5,1,0,3,8,1,8,9,6,0,5,1,9,6,3,5,8,7,8,2,7,4,6,2,6,1,4,4,4,4,7,9
%N A100085 Decimal expansion of Sum_{n>0} 1/(n!^n!).
%C A100085 This number was called the Pomerance Number, after Carl Pomerance, in the paper by Bailey and Crandall referenced here. The paper by Martin contains a suggestion in its the Acknowledgements section by Carl Pomerance that the number might be "absolutely abnormal".
%D A100085 G. Harman, One hundred years of normal numbers, in M. A. Bennett et al., eds., Number Theory for the Millennium, II (Urbana, IL, 2000), 149-166, A K Peters, Natick, MA, 2002.
%H A100085 Robert G. Wilson v, <a href="/A100085/b100085.txt">Table of n, a(n) for n = 1..10000</a>.
%H A100085 D. H. Bailey and R. E. Crandall, <a href="http://crd.lbl.gov/~dhbailey/dhbpapers/baicran.pdf">On the random character of fundamental constant expansions</a>
%H A100085 G. Martin, <a href="http://arxiv.org/abs/math/0006089">Absolutely abnormal numbers</a> arXiv:math/0006089 [math.NT], 2000; American Mathematical Monthly 108 (October):746-754.
%e A100085 1.250021433470507544581618655692730516577534706218865768307...
%t A100085 RealDigits[ Sum[1/(n!)^(n!), {n, 4}], 10, 111][[1]] (* _Robert G. Wilson v_, Feb 26 2008 *)
%o A100085 (PARI) suminf(n=1, 1/(n!^n!)) \\ _Michel Marcus_, Dec 22 2016
%Y A100085 Cf. A073009, A099870, A099871, A099872, A099873, A100084.
%K A100085 cons,nonn
%O A100085 1,2
%A A100085 Mark Hudson (mrmarkhudson(AT)hotmail.com), Nov 08 2004
%E A100085 Edited by _N. J. A. Sloane_, May 16 2008 at the suggestion of _R. J. Mathar_