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The zero is at 1/2 + i * 30.4248761258595132142487612585951321031189753058409132...
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G. C. Greubel, <a href="/A065453/b065453.txt">Table of n, a(n) for n = 2..10000</a>
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(PARI) solve(x=30, 31, real(zeta(1/2+x*I))) \\ Charles R Greathouse IV, Mar 10 2016
(PARI) lfunzeros(lzeta, [30, 31])[1] \\ Charles R Greathouse IV, Mar 10 2016
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