%I #24 Mar 20 2024 07:53:29
%S 2,1,7,2,6,3,2,0,5,7,2,8,5,7,6,2,8,7,1,6,2,8,3,1,5,4,3,4,4,4,8,0,9,3,
%T 2,3,4,3,9,4,4,9,2,8,8,4,9,4,6,4,4,3,7,9,9,3,3,6,9,3,6,2,4,9,4,6,6,7,
%U 9,3,2,2,4,8,0,9,9,8,2,1,4,5,0,3,1,4,9,4,3,8,4,6,5,6,8,2,0,1,5,4,5,1,6,3,5
%N Decimal expansion of zeta(zeta(2)).
%e 2.1726320572857628716283154344480932343944...
%p evalf(Zeta(Zeta(2)), 100); # _Wesley Ivan Hurt_, Sep 11 2017
%t First[RealDigits[Zeta[Zeta[2]], 10, 100]] (* _Paolo Xausa_, Mar 20 2024 *)
%o (PARI) zeta(zeta(2)) \\ _Michel Marcus_, Sep 11 2017
%Y Cf. A013661.
%K nonn,cons
%O 1,1
%A _Bobby Jacobs_, Sep 11 2017