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A233345
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Numbers having at least one digit 0 and at least two identical digits (which may be two 0's), in their decimal expansion.
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1
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100, 101, 110, 200, 202, 220, 300, 303, 330, 400, 404, 440, 500, 505, 550, 600, 606, 660, 700, 707, 770, 800, 808, 880, 900, 909, 990, 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1030, 1031
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OFFSET
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1,1
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COMMENTS
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Original definition: Numbers such that any (base-10) digit d[i] is the difference of two distinct digits d[j] and d[k] (where "distinct" means j <> k).
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LINKS
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MATHEMATICA
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otQ[n_]:=Module[{c=DigitCount[n]}, Last[c]>0&&Max[c]>1]; Select[Range[ 1200], otQ] (* Harvey P. Dale, Jul 26 2017 *)
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PROG
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(PARI) is(n)=for(i=2, #n=vecsort(digits(n)), n[i]==n[i-1]&&return(!n[1]))
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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