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A007957
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Numbers that contain an odd digit.
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4
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1, 3, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 23, 25, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 43, 45, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 63, 65, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 83, 85, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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MATHEMATICA
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Select[Range[100], Count[IntegerDigits[#], _?OddQ]>0&] (* Harvey P. Dale, Sep 06 2017 *)
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PROG
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(Haskell)
import Data.List findIndices)
a007957 n = a007957_list !! (n-1)
a007957_list = findIndices (> 0) a196564_list
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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R. Muller
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STATUS
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approved
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