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A024026
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a(n) = 3^n - n^3.
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15
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1, 2, 1, 0, 17, 118, 513, 1844, 6049, 18954, 58049, 175816, 529713, 1592126, 4780225, 14345532, 43042625, 129135250, 387414657, 1162254608, 3486776401, 10460343942, 31381048961, 94143166660, 282429522657, 847288593818
(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.: (-1 + 5*x - 5*x^2 - 7*x^3 - 4*x^4)/((3*x-1)*(x-1)^4). - Maksym Voznyy (voznyy(AT)mail.ru), Aug 14 2009
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MAPLE
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MATHEMATICA
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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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