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 A255742 Integers setting a record for the absolute minimal difference from the imaginary part of a nontrivial zero of the Riemann zeta function. 3
 14, 21, 25, 48, 146, 776, 3764, 7847, 7904, 18048, 90930, 92219 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS We consider here the imaginary part of 1/2 + iy = z, for which Zeta(z) is a zero. No more terms below the 600000th nontrivial zero of Riemann zeta function. - Robert G. Wilson v, Sep 30 2015 Is there an Im(rho_k) that is also an positive integer?. Is there a minimum gap between an Im(rho_k) and an positive integer?. At present it is not known whether this sequence is finite or infinite. - Omar E. Pol, Oct 13 2015 LINKS Andrew M. Odlyzko, Tables of zeros of the Riemann zeta function Andrew M. Odlyzko, On the distribution of spacings between zeros of the zeta function FORMULA a(n) = A002410(A255739(n)). EXAMPLE -------------------------------------------------------------------                                      Absolute      New k      Im(rho_k)       A002410(k)   difference   record   n   a(n) ------------------------------------------------------------------- 1    14.134725142    >    14        0.134725142    Yes    1    14 2    21.022039639    >    21        0.022039639    Yes    2    21 3    25.010857580    >    25        0.010857580    Yes    3    25 4    30.424876126    >    30        0.424876126    Not 5    32.935061588    <    33        0.064938412    Not 6    37.586178159    <    38        0.413821841    Not 7    40.918719012    <    41        0.081280988    Not 8    43.327073281    >    43        0.327073281    Not 9    48.005150881    >    48        0.005150881    Yes    4    48 10   49.773832478    <    50        0.226167522    Not ... Where rho_k is the k-th nontrivial zero of Riemann zeta function. We compute all decimal places of Im(rho_k), but in above table appear only 9 decimal places. CROSSREFS Cf. A002410, A013629, A092783, A255739. Sequence in context: A002410 A108606 A129497 * A093994 A114985 A001944 Adjacent sequences:  A255739 A255740 A255741 * A255743 A255744 A255745 KEYWORD nonn,hard,more AUTHOR Omar E. Pol, Mar 16 2015 EXTENSIONS a(6)-a(10) from Robert G. Wilson v, Sep 29 2015 a(11)-a(12) from Robert G. Wilson v, Sep 30 2015 STATUS approved

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Last modified October 13 23:25 EDT 2019. Contains 327983 sequences. (Running on oeis4.)