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A092035 Decimal expansion of (Pi/e)^2. 5

%I #20 Aug 15 2022 10:24:20

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

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

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

%N Decimal expansion of (Pi/e)^2.

%H Vincenzo Librandi, <a href="/A092035/b092035.txt">Table of n, a(n) for n = 1..10000</a>

%F Conjecture: Equals 12*Sum_{k >= 1} ((-1)^(k+1)/k^2) * cos(sqrt(2*k^2*Pi^2/3 - 4)). Cf. A100074. - _Peter Bala_, Jun 20 2022

%e 1.33570570...

%t RealDigits[(Pi/E)^2, 10, 100][[1]] (* _Vincenzo Librandi_, Mar 01 2013 *)

%Y Cf. A061382, A100074.

%K easy,nonn,cons

%O 1,2

%A _Mohammad K. Azarian_, Mar 26 2004

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Last modified April 18 10:01 EDT 2024. Contains 371779 sequences. (Running on oeis4.)