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 A134878 #12 Jul 31 2025 13:03:29
%S A134878 1,0,0,3,9,0,6,2,5,2,5,8,1,1,7,4,7,9,1,7,6,7,4,0,7,2,9,0,6,1,4,3,0,6,
%T A134878 7,4,1,0,7,6,1,2,4,9,2,4,3,7,9,2,8,5,9,4,7,8,7,6,4,0,4,7,9,0,7,9,5,0,
%U A134878 9,9,2,1,9,0,5,0,8,6,9,4,4,5,1,6,6,8,8,4,0,2,7,3,4,8,3,4,4,6,9,6,6,8,8,5
%N A134878 Decimal expansion of Sum_{k>=1} 1/(k^2)^(k^2).
%C A134878 Sum_{k>=1} 1/(k^2)^(k^2) = 1.003906252581174791767407290614306741076124924379285...
%F A134878 Equals Sum_{n>=1} 1/A008972(n). - _R. J. Mathar_, Jul 31 2025
%t A134878 RealDigits[N[Sum[1/(n^2)^(n^2), {n, 1, 30}], 200]][[1]]
%Y A134878 Cf. A073009, A100085, A134877.
%K A134878 nonn,cons
%O A134878 1,4
%A A134878 _Artur Jasinski_, Nov 14 2007