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A044166
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Numbers n such that string 4,0 occurs in the base 7 representation of n but not of n-1.
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0
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28, 77, 126, 175, 196, 224, 273, 322, 371, 420, 469, 518, 539, 567, 616, 665, 714, 763, 812, 861, 882, 910, 959, 1008, 1057, 1106, 1155, 1204, 1225, 1253, 1302, 1351, 1372, 1449, 1498, 1547, 1568, 1596, 1645, 1694, 1743, 1792
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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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Flatten[Position[Partition[Table[If[MemberQ[Partition[ IntegerDigits[ n, 7], 2, 1], {4, 0}], 1, 0], {n, 2000}], 2, 1], {0, 1}]]+1 (* Harvey P. Dale, Jan 20 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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