A134879 - OEIS

%I #9 Jan 15 2021 09:15:18

%S 1,0,0,0,0,0,0,0,5,9,6,0,4,6,4,4,7,7,5,3,9,0,6,2,5,0,0,0,0,0,0,0,0,0,

%T 0,0,0,0,0,2,2,5,5,1,6,5,2,3,3,7,2,8,4,5,8,8,8,8,8,3,7,9,8,9,7,5,9,3,

%U 7,6,8,3,7,2,0,8,4,9,2,0,2,8,5,0,1,1,5,8,4,6,2,0,8,2,0,3,7,4,9,4,4,6,3,3,8,5,6,0,8,4,0,0

%N Decimal expansion of Sum_{k>=1} 1/(k^3)^(k^3).

%C Sum_{k>=1} 1/(k^3)^(k^3) = 1.00000005960464477539062500000000000000225516523372...

%t RealDigits[N[Sum[1/(n^3)^(n^3), {n, 1, 30}], 200]][[1]]

%o (PARI) suminf(n=1,n^(-3*n^3)) \\ _Charles R Greathouse IV_, Dec 26 2011

%Y Cf. A073009, A100085, A134877, A134878.

%K nonn,cons

%O 1,9

%A _Artur Jasinski_, Nov 14 2007