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 A270036 a(n) is the smallest b for which the base-b representation of n contains a digit greater than 9. 1
 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 11, 17, 12, 12, 13, 13, 13, 14, 14, 14, 15, 11, 15, 16, 12, 12, 17, 13, 13, 13, 14, 14, 11, 14, 15, 15, 12, 12, 16, 16, 13, 13, 13, 11, 14, 14, 14, 14 (list; graph; refs; listen; history; text; internal format)
 OFFSET 10,1 LINKS Nathan Fox, Table of n, a(n) for n = 10..10000 MATHEMATICA Table[SelectFirst[Range[11, 10^3], Total@ Drop[Most[DigitCount[n, #]], 9] > 0 &], {n, 10, 120}] (* Michael De Vlieger, Mar 10 2016, Version 10 *) PROG (PARI) a(n) = my(b=10); while(vecmax(digits(n, b)) < 10, b++); b; \\ Michel Marcus, Mar 10 2016 CROSSREFS Sequence in context: A020510 A291521 A324309 * A178405 A162903 A216589 Adjacent sequences: A270033 A270034 A270035 * A270037 A270038 A270039 KEYWORD nonn,base AUTHOR Nathan Fox, Mar 08 2016 STATUS approved

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Last modified December 5 05:37 EST 2023. Contains 367575 sequences. (Running on oeis4.)