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A044764
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Numbers n such that string 5,1 occurs in the base 10 representation of n but not of n+1.
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0
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51, 151, 251, 351, 451, 519, 551, 651, 751, 851, 951, 1051, 1151, 1251, 1351, 1451, 1519, 1551, 1651, 1751, 1851, 1951, 2051, 2151, 2251, 2351, 2451, 2519, 2551, 2651, 2751, 2851, 2951, 3051, 3151, 3251, 3351, 3451, 3519
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..39.
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MATHEMATICA
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Flatten[Position[Partition[Table[If[MemberQ[Partition[ IntegerDigits[ n], 2, 1], {5, 1}], 1, 0], {n, 3600}], 2, 1], {1, 0}]] (* Harvey P. Dale, Aug 17 2014 *)
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CROSSREFS
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Sequence in context: A044683 A348000 A044383 * A257352 A353599 A008883
Adjacent sequences: A044761 A044762 A044763 * A044765 A044766 A044767
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KEYWORD
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nonn,base
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AUTHOR
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Clark Kimberling
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STATUS
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approved
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