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A044756
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Numbers n such that string 4,3 occurs in the base 10 representation of n but not of n+1.
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0
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43, 143, 243, 343, 439, 443, 543, 643, 743, 843, 943, 1043, 1143, 1243, 1343, 1439, 1443, 1543, 1643, 1743, 1843, 1943, 2043, 2143, 2243, 2343, 2439, 2443, 2543, 2643, 2743, 2843, 2943, 3043, 3143, 3243, 3343, 3439, 3443
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {4, 3}]>0, 1, 0], {n, 3500}], {1, 0}]][[1]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Nov 28 2015 *)
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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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