A347407 - OEIS

%I #20 Aug 31 2021 08:29:25

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

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

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

%N Decimal expansion of Sum_{i>=1} of i/Pi^i.

%F Equals Pi/(Pi-1)^2. - _Vaclav Kotesovec_, Aug 30 2021

%F Equals 1/(A098801 - 2). - _Amiram Eldar_, Aug 30 2021

%e 0.684977231531558172713446096930765618100063823640134883981...

%t RealDigits[Pi/(Pi - 1)^2, 10, 100][[1]] (* _Amiram Eldar_, Aug 30 2021 *)

%o (PARI) suminf(i=1, i/Pi^i) \\ _Michel Marcus_, Aug 30 2021

%Y Cf. A000796, A098801.

%K nonn,cons

%O 0,1

%A _Christoph B. Kassir_, Aug 30 2021