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A054607
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a(n) = Sum_{d|8} phi(d)*n^(8/d).
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2
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0, 8, 288, 6672, 65840, 391320, 1681008, 5767328, 16781472, 43053480, 100010240, 214373808, 430002768, 815759672, 1475827920, 2562941760, 4295033408, 6975841608, 11020066272, 16983694160, 25600160880, 37823054808, 54876108848
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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G.f.: -8*x*(34*x^6+525*x^5+1971*x^4+1936*x^3+546*x^2+27*x+1) / (x-1)^9. [Colin Barker, Dec 21 2012]
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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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