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A111454
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a(n) = (n-4)^(n-3) - (n-3)^(n-4) + 1.
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2
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0, 0, 0, 18, 400, 7850, 162288, 3667650, 91171008, 2486784402, 74062575400, 2395420006034, 83695120256592, 3143661612445146, 126375169532421600, 5415486851106043650, 246486713303685957376
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OFFSET
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4,4
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LINKS
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FORMULA
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MATHEMATICA
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Table[(n-4)^(n-3)-(n-3)^(n-4)+1, {n, 4, 20}] (* Harvey P. Dale, Oct 05 2019 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Robert J. Reid (greencroft57(AT)yahoo.co.uk), Nov 14 2005
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EXTENSIONS
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STATUS
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approved
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