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A053509
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binomial(n-1,4)*n^(n-5).
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6
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0, 0, 0, 0, 1, 30, 735, 17920, 459270, 12600000, 372027810, 11824496640, 403786706895, 14772648450560, 577227041015625, 24013333950627840, 1060372471758165020, 49558656380297379840, 2444960458495625410260, 127008768000000000000000
(list; graph; refs; listen; history; internal format)
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