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A085535
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a(n) = (2n)^(2n-1).
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3
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2, 64, 7776, 2097152, 1000000000, 743008370688, 793714773254144, 1152921504606846976, 2185911559738696531968, 5242880000000000000000000, 15519448971100888972574851072, 55572324035428505185378394701824, 236773830007967588876795164938469376
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OFFSET
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1,1
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COMMENTS
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a(0) is 0^(-1) = 1/0, which is undefined.
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LINKS
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FORMULA
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MATHEMATICA
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Table[(2*n)^(2*n - 1), {n, 20}] (* T. D. Noe, Feb 26 2013 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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