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 A089590 Uban numbers (the letter u is banned from the English name of the number). 8
 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 79, 80, 81, 82, 83, 85, 86, 87, 88, 89, 90, 91, 92, 93, 95, 96, 97, 98, 99 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS The sequence of uban numbers first differs from A052406 (the numbers not containing the digit 4) at the term 40 (forty), which is a uban number but is not 4-less. LINKS Daniel Arribas and Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 (first 89 terms from Daniel Arribas) Roel and Bas van Dijk, Numerals package, Hackage (Haskell packages) Eric Weisstein's World of Mathematics, Uban Number PROG (Haskell) import Data.Maybe (fromJust) import Data.Text (Text); import qualified Data.Text as T (all) import Text.Numeral.Grammar.Reified (defaultInflection) import qualified Text.Numeral.Language.EN as EN  -- see link a089590 n = a089590_list !! (n-1) a089590_list = filter (T.all (/= 'u') . numeral) [0..] where    numeral :: Integer -> Text    numeral = fromJust . EN.gb_cardinal defaultInflection -- Reinhard Zumkeller, Jan 23 2015 CROSSREFS Cf. A052406. Cf. A006933 (ban e), A089589 (ban i), A008521 (ban o), A008523 (ban t). Sequence in context: A242410 A258022 A333638 * A052406 A022306 A183298 Adjacent sequences:  A089587 A089588 A089589 * A089591 A089592 A089593 KEYWORD nonn,easy,word AUTHOR Eric W. Weisstein, Nov 09 2003 EXTENSIONS a(1) = 0 prepended by Reinhard Zumkeller, Jan 23 2015 STATUS approved

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Last modified September 18 10:11 EDT 2020. Contains 337166 sequences. (Running on oeis4.)