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A100214
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a(n) = 4*n^3 + 4.
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3
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4, 8, 36, 112, 260, 504, 868, 1376, 2052, 2920, 4004, 5328, 6916, 8792, 10980, 13504, 16388, 19656, 23332, 27440, 32004, 37048, 42596, 48672, 55300, 62504, 70308, 78736, 87812, 97560, 108004, 119168, 131076, 143752, 157220, 171504, 186628, 202616, 219492
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OFFSET
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0,1
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REFERENCES
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T. A. Gulliver, Sequences from Cubes of Integers, Int. Math. Journal, 4 (2003), 439-445.
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LINKS
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FORMULA
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O.g.f.: 28/(1-x)^2 - 48/(1-x)^3 + 24/(1-x)^4.
E.g.f.: 4*(1 + x + 3*x^2 + x^3)*exp(x). - G. C. Greubel, Mar 29 2024
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MATHEMATICA
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PROG
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(SageMath) [4*(n^3+1) for n in range(41)] # G. C. Greubel, Mar 29 2024
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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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