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A333508
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Central coefficients of polynomials related to Weyl groups and defined in A162206.
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1
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1, 2, 6, 30, 212, 1924, 21280, 277788, 4180544, 71259048, 1356909620, 28547946524, 657640647850, 16463431995932, 445040788849348, 12919664598624526, 400880326987609778, 13239976828676088316, 463742797180250495450, 17169969365226035615744
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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a[n_] := SeriesCoefficient[(1-x^n) Product[1-x^(2k), {k, 1, n-1}]/(1-x)^n, {x, 0, n(n-1)/2}];
Array[a, 20]
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CROSSREFS
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Cf. A162206 - A162212, A162248, A162288, A162297, A162300, A162301, A162321, A162327, A162328, A162346, A162347, A162359.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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