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Search: id:A028368
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| A028368 |
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Product(2^j-1,j=1..n-1)*2^binomial(n+1,2). |
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1
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| 1, 2, 8, 192, 21504, 10321920, 20478689280, 165140150353920, 5369036568306647040, 700981414358115837542400, 366798338802685125615786393600, 768480666818860817418136536376934400
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