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A098609
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a(n) = 100^n-1.
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4
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0, 99, 9999, 999999, 99999999, 9999999999, 999999999999, 99999999999999, 9999999999999999, 999999999999999999, 99999999999999999999, 9999999999999999999999, 999999999999999999999999, 99999999999999999999999999, 9999999999999999999999999999, 999999999999999999999999999999
(list;
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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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a(n) = 101*a(n-1) - 100*a(n-2) for n > 1.
G.f.: 99*x/((x - 1)*(100*x - 1)). (End)
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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