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A033636
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a(n) = (n-1)! * Product_{i=1..n-1} ((2*n)!-2*i-1).
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0
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1, 21, 1025310, 393143628567690, 4161601591128480023923529880, 3025979870886810157320547152897281546399520600, 316069513961213168272637175554794298273860325049869267706740636689200
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OFFSET
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1,2
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REFERENCES
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Barry Simon, Representations of Finite and Compact Groups, AMS, p. 233.
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LINKS
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Table of n, a(n) for n=1..7.
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MATHEMATICA
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Table[(n - 1)!*Product[(2 n)! - 2 i - 1, {i, n - 1}], {n, 7}] (* Wesley Ivan Hurt, May 07 2014 *)
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CROSSREFS
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Sequence in context: A143736 A189252 A173518 * A138080 A013814 A013898
Adjacent sequences: A033633 A033634 A033635 * A033637 A033638 A033639
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane, Dec 11 1999
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STATUS
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approved
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