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A016963
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a(n) = (6*n + 4)^7.
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6
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16384, 10000000, 268435456, 2494357888, 13492928512, 52523350144, 163840000000, 435817657216, 1028071702528, 2207984167552, 4398046511104, 8235430000000, 14645194571776, 24928547056768, 40867559636992, 64847759419264, 100000000000000, 150363025899136, 221068140740608
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OFFSET
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0,1
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LINKS
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FORMULA
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Sum_{n>=0} 1/a(n) = 1093*zeta(7)/279936 - 7*Pi^7/(3149280*sqrt(3)). (End)
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MATHEMATICA
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(6*Range[0, 20]+4)^7 (* or *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {16384, 10000000, 268435456, 2494357888, 13492928512, 52523350144, 163840000000, 435817657216}, 20] (* Harvey P. Dale, Mar 03 2018 *)
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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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