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7, 637, 6937, 69937, 699937, 6999937, 69999937, 699999937, 6999999937, 69999999937, 699999999937, 6999999999937, 69999999999937, 699999999999937, 6999999999999937, 69999999999999937, 699999999999999937
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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CoefficientList[Series[7 (1 + 80 x)/((1 - x) (1 - 10 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Aug 23 2014 *)
LinearRecurrence[{11, -10}, {7, 637}, 20] (* Harvey P. Dale, Nov 30 2022 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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