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A038057
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a(n) = 2^n*n^(n-1).
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2
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2, 8, 72, 1024, 20000, 497664, 15059072, 536870912, 22039921152, 1024000000000, 53119845582848, 3043362286338048, 190857913323364352, 13004222844995895296, 956593800000000000000, 75557863725914323419136
(list; graph; refs; listen; history; internal format)
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