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 A174277 #11 Jul 07 2022 19:52:01
%S A174277 1439,143961949,
%T A174277 1439619495847590688336490804973755678698296474456640982233160641890243439489175847819775046598413042034429435933431518691836732951984722119433079301
%N A174277 Primes formed by the initial digits of the decimal expansion of Pi^(1/Pi).
%C A174277 John von Neumann et al. used ENIAC to compute 2037 digits of Pi in 1949, a calculation that took 70 hours. As of Jan 2010, the record is almost 2.7 trillion digits. The symbol for Pi was first put into use by mathematician William Jones in 1706, but only became famous after Swiss mathematician Leonard Euler used it in 1737.
%C A174277 As of March 2019, more than 31 trillion digits of Pi have been calculated. - _Harvey P. Dale_, Jul 21 2021
%t A174277 Select[a=Pi^(1/Pi);Table[Floor[a*10^n],{n,0,200}],PrimeQ[ # ]&]
%Y A174277 Cf. A000796, A005042.
%K A174277 nonn,base
%O A174277 1,1
%A A174277 _Vladimir Joseph Stephan Orlovsky_, Mar 14 2010