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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.

A341083 Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.

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%I A341083 #12 Feb 20 2021 23:09:27
%S A341083 5,29,61,109,181,641,661,1021,1549,2161,2389,3169,3469,4909,5581,8929,
%T A341083 9601,9949,12841,13381,14029,17029,21169,24709,25309,28729,31249,
%U A341083 32869,34549,35149,39901,40429,43801,48049,49009,56401,56701,62701,63541,70141,86269,91009
%N A341083 Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.
%C A341083 Analogous to A033316 for x^2 - D*y^2 = 1, and D is required to be prime, and for record values of x.
%H A341083 Christine Patterson, <a href="/A341083/a341083.txt">COCALC (Sage) Program</a>
%e A341083 For D=29, the least x for which x^2 - D*y^2 = -5 has a solution is 16. The next prime, D, for which x^2 - D*y^2 = -5 has a solution is 41, but the smallest x in this case is 6, which is less than 16. The next prime, D, after 41 for which x^2 - D*y^2 = -5 has a solution is 61 and the least x for which it has a solution is 164, which is larger than 16, so it is a new record value. So 29 is a term of this sequence and 16 is the corresponding term of A341084, but 41 is not a term here because the least x for which x^2 - D*y^2 = -5 has a solution is not a record value.
%e A341083 From _Jon E. Schoenfield_, Feb 20 2021: (Start)
%e A341083 As D runs through the primes, the minimal x values satisfying the equation x^2 - D*y^2 = -5 begin as follows:
%e A341083 .
%e A341083       x values satisfying    minimal
%e A341083    D    x^2 - D*y^2 = -5     x value  record
%e A341083   --  ---------------------  -------  ------
%e A341083    2  (none)
%e A341083    3  (none)
%e A341083    5  0, 20, 360, 6460, ...      0       *
%e A341083    7  (none)
%e A341083   11  (none)
%e A341083   13  (none)
%e A341083   17  (none)
%e A341083   19  (none)
%e A341083   23  (none)
%e A341083   29  16, 1524, 315156, ...     16       *
%e A341083   31  (none)
%e A341083   37  (none)
%e A341083   41  6, 826, 25414, ...         6
%e A341083   43  (none)
%e A341083   47  (none)
%e A341083   51  (none)
%e A341083   53  (none)
%e A341083   59  (none)
%e A341083   61  164, 26924344, ...       164       *
%e A341083   ...
%e A341083 The record high minimal values of x (marked with asterisks) are the terms of A341084. The corresponding values of D are the terms of this sequence. (End)
%Y A341083 Cf. A033316, A341084.
%K A341083 nonn
%O A341083 1,1
%A A341083 _Christine Patterson_, Feb 13 2021
%E A341083 a(1)=5 inserted and Example section edited by _Jon E. Schoenfield_, Feb 20 2021