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Numerators in the series for sec(x) that are primes.
1

%I #11 Aug 23 2023 10:52:29

%S 5,61,277,23489580527043108252017828576198947741,

%T 5516994249383296071214195242422482492286460673697

%N Numerators in the series for sec(x) that are primes.

%H Swee Hong Chan and Igor Pak, <a href="https://arxiv.org/abs/2308.10214">Computational complexity of counting coincidences</a>, arXiv:2308.10214 [math.CO], 2023. See p. 16.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Secant.html">Secant</a>

%Y Cf. A092839.

%K nonn

%O 1,1

%A _Eric W. Weisstein_, Mar 07 2004