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A345701
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a(n) = 3*n^3 - 1.
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1
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-1, 2, 23, 80, 191, 374, 647, 1028, 1535, 2186, 2999, 3992, 5183, 6590, 8231, 10124, 12287, 14738, 17495, 20576, 23999, 27782, 31943, 36500, 41471, 46874, 52727, 59048, 65855, 73166, 80999, 89372, 98303, 107810, 117911, 128624, 139967, 151958, 164615, 177956, 191999
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OFFSET
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0,2
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COMMENTS
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LINKS
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FORMULA
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E.g.f.: exp(x)*(-1 + 3*x + 9*x^2 + 3*x^3). - Stefano Spezia, Jun 24 2021
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MATHEMATICA
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Table[3 n^3 - 1, {n, 100}]
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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STATUS
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approved
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