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2187, 170859375, 10460353203, 137231006679, 897410677851, 3938980639167, 13348388671875, 37725479487783, 93206534790699, 207616015289871, 425927596977747, 817215093984375, 1483273860320763, 2569093262823519
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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a(0)=2187, a(1)=170859375, a(2)=10460353203, a(3)=137231006679, a(4)=897410677851, a(5)=3938980639167, a(6)=13348388671875, a(7)=37725479487783, a(n)=8*a(n-1)-28*a(n-2)+56*a(n-3)-70*a(n-4)+56*a(n-5)- 28*a(n-6)+ 8*a(n-7)-a(n-8). - Harvey P. Dale, Sep 12 2015
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MATHEMATICA
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(12*Range[0, 20]+3)^7 (* or *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {2187, 170859375, 10460353203, 137231006679, 897410677851, 3938980639167, 13348388671875, 37725479487783}, 20] (* Harvey P. Dale, Sep 12 2015 *)
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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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