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A016935
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a(n) = (6*n + 2)^3.
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14
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8, 512, 2744, 8000, 17576, 32768, 54872, 85184, 125000, 175616, 238328, 314432, 405224, 512000, 636056, 778688, 941192, 1124864, 1331000, 1560896, 1815848, 2097152, 2406104, 2744000, 3112136
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OFFSET
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0,1
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COMMENTS
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LINKS
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FORMULA
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Sum_{n>=0} 1/a(n) = Pi^3 / (324*sqrt(3)) + 13*zeta(3)/216. - Amiram Eldar, Oct 02 2020
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EXAMPLE
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a(1) = (6*1 + 2)^3 = 8^3 = 512.
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MATHEMATICA
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(6*Range[0, 30]+2)^3 (* or *) LinearRecurrence[{4, -6, 4, -1}, {8, 512, 2744, 8000}, 30] (* Harvey P. Dale, Aug 23 2019 *)
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PROG
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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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