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Search: id:A093434
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| A093434 |
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a(n) = product of 2n distinct numbers, n just less than 2n and n just more than 2n. |
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+0
1
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| 3, 180, 30240, 9979200, 5448643200, 4446092851200, 5068545850368000, 7694052600858624000, 15003402571674316800000, 36548288664598635724800000, 108767707065845539917004800000, 388300714225068577503707136000000
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OFFSET
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1,1
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COMMENT
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The arithmetic mean of these numbers is 2n.
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EXAMPLE
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a(3) = (3*4*5)*(7*8*9).
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MATHEMATICA
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Table[(3n)!/(2n*(n - 1)!), {n, 12}] (from Robert G. Wilson v Apr 24 2004)
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CROSSREFS
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Sequence in context: A125711 A113270 A091324 this_sequence A053291 A042779 A103503
Adjacent sequences: A093431 A093432 A093433 this_sequence A093435 A093436 A093437
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 01 2004
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 24 2004
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