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A011532
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Numbers that contain a 2.
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29
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2, 12, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 32, 42, 52, 62, 72, 82, 92, 102, 112, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 132, 142, 152, 162, 172, 182, 192, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214
(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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Select[Range[600] - 1, DigitCount[#, 10, 2]>0 &] (* Vincenzo Librandi, Jan 11 2016 *)
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PROG
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(Haskell)
a011532 n = a011532_list !! (n-1)
a011532_list = filter ((elem '2') . show) [0..]
(GAP) Filtered([1..220], n->2 in ListOfDigits(n)); # Muniru A Asiru, Feb 23 2019
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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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STATUS
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approved
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