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A245301
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a(n) = n*(7*n^2 + 15*n + 8)/6.
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5
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0, 5, 22, 58, 120, 215, 350, 532, 768, 1065, 1430, 1870, 2392, 3003, 3710, 4520, 5440, 6477, 7638, 8930, 10360, 11935, 13662, 15548, 17600, 19825, 22230, 24822, 27608, 30595, 33790, 37200, 40832, 44693, 48790, 53130, 57720, 62567, 67678, 73060, 78720, 84665
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OFFSET
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0,2
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COMMENTS
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Row sums of the triangle in A245300.
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LINKS
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FORMULA
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E.g.f.: x*(30 + 36*x + 7*x^2)*exp(x)/6. - G. C. Greubel, Mar 31 2021
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MAPLE
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MATHEMATICA
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LinearRecurrence[{4, -6, 4, -1}, {0, 5, 22, 58}, 50] (* Harvey P. Dale, Sep 21 2019 *)
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PROG
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(Haskell)
a245301 n = n * (n * (7 * n + 15) + 8) `div` 6
(Sage) [n*(n+1)*(7*n+8)/6 for n in (0..50)] # G. C. Greubel, Mar 31 2021
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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