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A173130
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a(n) = Cosh[(2 n - 1) ArcCosh[n]].
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9
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0, 1, 26, 3363, 937444, 456335045, 343904160606, 371198523608647, 543466014742175624, 1036834190110356583689, 2499384905955651114739810, 7429238104512325157021090411, 26695718139185294187938997247212
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OFFSET
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0,3
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LINKS
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FORMULA
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MATHEMATICA
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Table[Round[Cosh[(2 n - 1) ArcCosh[n]]], {n, 0, 20}] (* Artur Jasinski *)
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CROSSREFS
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Cf. A058331, A001079, A037270, A071253, A108741, A132592, A146311, A146312, A146313, A173115, A173116, A173121, A173127, A173128.
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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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