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A051848
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Bisection of A023811, divided by the term position.
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0
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1, 9, 373, 48913, 13717421, 6698798233, 5057809205989, 5465701947765793, 8008631808527689309, 15287592943577781017641, 36867279706750843040346261, 109619115381793714510485861169, 393991653133258067890987154457613, 1683967033137904529927995135566966713
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OFFSET
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1,2
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LINKS
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FORMULA
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PROG
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(PARI) f(n) = (n^n-n^2)\(n-1)^2+1; \\ A023811
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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