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 A164793 a(n) is the smallest number whose English name has the letter "i" in the n-th position, or -1 if no such number exists. 8
 -1, 5, 13, -1, 1000000, 4000000, 45, 25, 75, 13000000, 17000000, 105, 113, 305, 313, 3013, 145, 125, 175, 325, 375, 3075, 1105, 1113, 1305, 1313, 3305, 1145, 1125, 1175, 1325, 1375, 3325, 3375, 11375, 13325, 13375, 17375, 23325, 23375, 73375, 101375, 103325 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Original definition used "-2 for infinite". LINKS EXAMPLE a(2)=5 ("fIve"), a(3)=13 ("thIrteen"), a(5)=10^6 ("onemIllion"). CROSSREFS Cf. A164789 ("o"), A164790 ("e"), A164791 ("n"), A164792 ("t"). Cf. A164794 ("f"), A164795 ("h"), A164796 ("r"), A164797 ("u"). Sequence in context: A245776 A025580 A073878 * A065934 A282063 A035412 Adjacent sequences: A164790 A164791 A164792 * A164794 A164795 A164796 KEYWORD word,sign AUTHOR Claudio Meller, Aug 26 2009 EXTENSIONS a(11) and beyond from Michael S. Branicky, Feb 02 2021 Name changed to remove "-2" (see Comments), and a(1) and a(4) changed from -2 to -1 by Jon E. Schoenfield, Feb 02 2021 STATUS approved

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Last modified February 1 23:45 EST 2023. Contains 359997 sequences. (Running on oeis4.)