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 A328030 Maximum determinant of a circulant n X n matrix whose rows are permutations of [1,2,..,n]. 5
 1, 1, 3, 18, 160, 2325, 41895, 961772, 26978400, 929587995, 36843728625, 1705290814194, 89802671542272, 5336424046419557, 354379732734283200, 26173529641406219400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS 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. LINKS Table of n, a(n) for n=0..15. Mathematics Stack Exchange, Maximum determinant of Latin squares, (2014), (2016). Wikipedia, Circulant matrix. FORMULA a(n) = A309985(n) for n <= 9. a(n) <= A328031(n). CROSSREFS Cf. A309985, A328029, A328031. Sequence in context: A212599 A052182 A309985 * A301371 A115415 A364432 Adjacent sequences: A328027 A328028 A328029 * A328031 A328032 A328033 KEYWORD nonn,more,hard AUTHOR Hugo Pfoertner, Oct 02 2019 EXTENSIONS a(15) from Hugo Pfoertner, Oct 14 2019 STATUS approved

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Last modified September 18 21:47 EDT 2024. Contains 376002 sequences. (Running on oeis4.)