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A125776 Continued fraction expansion of the Landau-Ramanujan constant (A064533). 2

%I #12 Aug 19 2016 00:34:39

%S 0,1,3,4,6,1,15,1,2,2,3,1,23,3,1,1,3,1,1,6,4,1,1,2,4,39,1,1,3,1,2,1,3,

%T 181,2,1,103,2,1,5,1,1,1,1,6,1,7,5,1,2,1,2,2,2,2,1,21,8,1,9,2,2,4,2,6,

%U 1,4,1,1,1,1,15,1,1,10,1,7,2,1,1,2,4,2,4,1,3,1,4,1,1,23,1,1,48,1,38,1,1,1

%N Continued fraction expansion of the Landau-Ramanujan constant (A064533).

%C Increasing PQ's: 0, 1, 3, 4, 6, 15, 23, 39, 181, 386, 3389, 62656, ...

%H Harry J. Smith, <a href="/A125776/b125776.txt">Table of n, a(n) for n = 1..9687</a>

%e k=0.7642236535892206629906987... = 0 + 1/(1 + 1/(3 + 1/(4 + 1/(6 + ...)))). - _Harry J. Smith_, Apr 23 2009

%t LandauRamanujan[n_] := N[Product[ ((1 - 2^(-2^k)) 4^(2^k) Zeta[2^k]/(Zeta[2^k, 1/4] - Zeta[2^k, 3/4]))^(2^(-k-1)), {k, n}]/Sqrt@2, 2^7]; ContinuedFraction@LandauRamanujan@8

%Y Cf. A064533.

%K cofr,nonn

%O 1,3

%A _Robert G. Wilson v_, Dec 07 2006

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)