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 A328031 Upper bound for the determinant of an n X n matrix whose entries are a permutation of the multiset {1^n,...,n^n}. 3
 1, 1, 3, 18, 172, 2343, 42439, 976050, 27583338, 934173632, 37180409223, 1711870023666, 90007747560742, 5346164992890599, 355442084718552178, 26244000000000000000, 2137205155719002036203, 190811368062993357765186, 18577775646585813239195436, 1963166636163973976912956096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Markus Sigg, Gasper's determinant theorem, revisited, arXiv:1804.02897 [math.CO], 2018. FORMULA a(n) = floor(n^n*((n+1)/2)*((n+1)/12)^((n-1)/2)) (Corollary 3 in M. Sigg's article). PROG (PARI) for(n=1, 20, print1(floor(n^n*((n+1)/2)*((n+1)/12)^((n-1)/2)), ", ")) CROSSREFS Cf. A301371, A309985, A328030. Sequence in context: A193098 A322771 A177447 * A005192 A080687 A231619 Adjacent sequences:  A328028 A328029 A328030 * A328032 A328033 A328034 KEYWORD nonn,easy AUTHOR Hugo Pfoertner, Oct 02 2019 STATUS approved

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Last modified August 6 10:14 EDT 2020. Contains 336245 sequences. (Running on oeis4.)