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.
%I A328030 #15 Oct 14 2019 15:14:52 %S A328030 1,1,3,18,160,2325,41895,961772,26978400,929587995,36843728625, %T A328030 1705290814194,89802671542272,5336424046419557,354379732734283200, %U A328030 26173529641406219400 %N A328030 Maximum determinant of a circulant n X n matrix whose rows are permutations of [1,2,..,n]. %C A328030 It is conjectured that A309985 is identical to this sequence. See Mathematics Stack Exchange link. The first rows of the corresponding circulant matrices are provided in A328029. %H A328030 Mathematics Stack Exchange, <a href="https://math.stackexchange.com/questions/885481/maximum-determinant-of-latin-squares">Maximum determinant of Latin squares</a>, (2014), (2016). %H A328030 Wikipedia, <a href="https://en.wikipedia.org/wiki/Circulant_matrix">Circulant matrix</a>. %F A328030 a(n) = A309985(n) for n <= 9. %F A328030 a(n) <= A328031(n). %Y A328030 Cf. A309985, A328029, A328031. %K A328030 nonn,more,hard %O A328030 0,3 %A A328030 _Hugo Pfoertner_, Oct 02 2019 %E A328030 a(15) from _Hugo Pfoertner_, Oct 14 2019