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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A231165 Number of Gram blocks [g(j), g(j+1)) up to 10^n, 0 <= j < 10^n, which contain exactly three zeros of Z(t), where Z(t) is the Riemann-Siegel Z-function.

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%I A231165 #7 Feb 16 2025 08:33:20
%S A231165 0,6,86,1289,14932,166570
%N A231165 Number of Gram blocks [g(j), g(j+1)) up to 10^n, 0 <= j < 10^n, which contain exactly three zeros of Z(t), where Z(t) is the Riemann-Siegel Z-function.
%C A231165 We call a Gram point g(j) "good" if j is not in A114856, and "bad" otherwise. A "Gram block of length k" is an interval [g(j), g(j+k)) such that g(j) and g(j+k) are good Gram points, g(j+1), ..., g(j+k-1) are bad Gram points, and k >= 1.
%H A231165 Richard P. Brent, <a href="http://www.ams.org/journals/mcom/1979-33-148/S0025-5718-1979-0537983-2/">On the Zeros of the Riemann Zeta Function in the Critical Strip</a>, Math. Comp. 33 (1979), pp. 1361-1372.
%H A231165 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GramBlock.html">Gram Block</a>
%H A231165 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GramPoint.html">Gram Point</a>
%H A231165 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Riemann-SiegelFunctions.html">Riemann-Siegel Functions</a>
%Y A231165 Cf. A114856, A231157-A231164.
%K A231165 nonn,more
%O A231165 3,2
%A A231165 _Arkadiusz Wesolowski_, Nov 04 2013