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 A115853 Numbers where every digit that is present occurs more than once (not necessarily consecutively). 6
 11, 22, 33, 44, 55, 66, 77, 88, 99, 111, 222, 333, 444, 555, 666, 777, 888, 999, 1001, 1010, 1100, 1111, 1122, 1133, 1144, 1155, 1166, 1177, 1188, 1199, 1212, 1221, 1313, 1331, 1414, 1441, 1515, 1551, 1616, 1661, 1717, 1771, 1818, 1881, 1919, 1991, 2002 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Through terms shown, this is also numbers where every digit present occurs the same number of times (not necessarily consecutively). The first number in this sequence not in that one is 10001. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE filter:= proc(n) local L, S; L:= convert(n, base, 10); S:= convert(L, set); min(seq(numboccur(i, L), i=S)) > 1 end proc: select(filter, [\$1..10000]); # Robert Israel, May 28 2014 MATHEMATICA edQ[n_]:=Min[Select[DigitCount[n], #!=0&]]>1; Select[Range[2100], edQ] (* Harvey P. Dale, Dec 13 2018 *) CROSSREFS Cf. A033023, A014181. Sequence in context: A226467 A244394 A299792 * A050785 A369347 A239019 Adjacent sequences: A115850 A115851 A115852 * A115854 A115855 A115856 KEYWORD base,nonn AUTHOR Franklin T. Adams-Watters, Mar 13 2006 STATUS approved

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Last modified August 10 04:12 EDT 2024. Contains 375044 sequences. (Running on oeis4.)