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 A066044 Numbers n that are repdigits in more bases (smaller than n) than any smaller number. 1
 2, 3, 7, 15, 24, 40, 60, 120, 180, 336, 360, 720, 840, 1260, 1440, 1680, 2520, 5040, 7560, 10080, 15120, 20160, 25200, 27720, 45360, 50400, 55440, 83160, 110880, 166320, 221760 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A repdigit has all digits the same in some base. LINKS EXAMPLE 15 is on the list since 15 = 1111_2 = 33_4 = 11_14 and no smaller number is a repdigit in 3 different bases MATHEMATICA Do[ c = 1; k = 2; While[ k < n-1, If[ Length[ Union[ IntegerDigits[n, k]]] == 1, c++ ]; k++ ]; If[a[[c]] == 0, a[[c]] = n; Print[c, " = ", n]], {n, 1, 200000} ] CROSSREFS Cf. A066460. Sequence in context: A068080 A209658 A098763 * A066460 A001276 A006884 Adjacent sequences:  A066041 A066042 A066043 * A066045 A066046 A066047 KEYWORD nonn AUTHOR Erich Friedman, Dec 29 2001 EXTENSIONS More terms from Robert G. Wilson v, Jan 02 2002 STATUS approved

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