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A173813
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2*(10^n-5), n>0.
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1
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10, 190, 1990, 19990, 199990, 1999990, 19999990, 199999990, 1999999990, 19999999990, 199999999990, 1999999999990, 19999999999990, 199999999999990, 1999999999999990, 19999999999999990, 199999999999999990
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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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Table[(2 (10^n - 5)), {n, 1, 20}] (* or *) CoefficientList[Series[(10 + 80 x)/((1 - x) (1 - 10 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Aug 20 2014 *)
LinearRecurrence[{11, -10}, {10, 190}, 20] (* Harvey P. Dale, Aug 20 2023 *)
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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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