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A008520
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Numbers whose American English name contains the letter 'e'.
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12
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0, 1, 3, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 33, 35, 37, 38, 39, 41, 43, 45, 47, 48, 49, 51, 53, 55, 57, 58, 59, 61, 63, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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COMMENTS
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LINKS
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MATHEMATICA
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A008520Q[n_]:=StringContainsQ[IntegerName[n, "Words"], "e"]; Select[Range[0, 200], A008520Q] (* Paolo Xausa, Aug 11 2023 *)
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PROG
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(Haskell)
import Data.Maybe (fromJust)
import Data.Text (Text); import qualified Data.Text as T (any)
import Text.Numeral.Grammar.Reified (defaultInflection)
import qualified Text.Numeral.Language.EN as EN -- see link
a008520 n = a008520_list !! (n-1)
a008520_list = filter (T.any (== 'e') . numeral) [0..] where
numeral :: Integer -> Text
numeral = fromJust . EN.gb_cardinal defaultInflection
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CROSSREFS
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KEYWORD
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nonn,word
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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