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 A215616 From Wendt's determinant compute (-A048954(2*n)/3)^(1/3). 3
 1, 5, 0, 765, 41261, 0, 1175731456, 804611664045, 0, 4133434158867578125, 36792671310208420147421, 0, 33666995638445382179718361163901, 3930778415673723952392425569428439040, 0, 637350736211692642266912139961455499346709367565 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS It is known that 3 divides A048954(2*n). It is conjectured that the quotient is a perfect cube. See A048954 for additional comments, references, links, and cross-references. LINKS Gerard P. Michon, Factorization of Wendt's Determinant(see Remarks and Conjectures). FORMULA a(n) = (-A048954(2*n)/3)^(1/3). a(n) = 0 if and only if n is divisible by 3. MATHEMATICA w[n_] := Resultant[x^n - 1, (1 + x)^n - 1, x]; Table[(-w[2 n]/3)^(1/3), {n, 19}] CROSSREFS Cf. A048954, A215615. Sequence in context: A164555 A176327 A226156 * A249737 A129205 A327581 Adjacent sequences:  A215613 A215614 A215615 * A215617 A215618 A215619 KEYWORD nonn AUTHOR Jonathan Sondow, Aug 17 2012 STATUS approved

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Last modified April 15 13:13 EDT 2021. Contains 342977 sequences. (Running on oeis4.)