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A343480 Decimal expansion of 9 * Product_{p prime >= 5} (1-3/p)/(1-1/p)^3. 2


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

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

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

%N Decimal expansion of 9 * Product_{p prime >= 5} (1-3/p)/(1-1/p)^3.

%C This constant appears in the conjectured asymptotic formulas for A343478 and A343479.

%H Carlos Esparza and Lukas Gehring, <a href="https://arxiv.org/abs/1810.08679">Estimating the density of a set of primes with applications to group theory</a>, arXiv:1810.08679 [math.NT], 2018.

%e 5.71649719143844086486026932145270175607859118599135...

%o (PARI) 9 * prodeulerrat((1-3/p)/(1-1/p)^3, 1, 5)

%Y Cf. A343478, A343479.

%K nonn,cons

%O 1,1

%A _Amiram Eldar_, Apr 16 2021

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Last modified December 9 09:37 EST 2021. Contains 349627 sequences. (Running on oeis4.)