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A044564
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Numbers n such that string 6,3 occurs in the base 7 representation of n but not of n+1.
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0
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45, 94, 143, 192, 241, 290, 321, 339, 388, 437, 486, 535, 584, 633, 664, 682, 731, 780, 829, 878, 927, 976, 1007, 1025, 1074, 1123, 1172, 1221, 1270, 1319, 1350, 1368, 1417, 1466, 1515, 1564, 1613, 1662, 1693, 1711, 1760, 1809
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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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SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {6, 3}]>0, 1, 0], {n, 2000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 07 2018 *)
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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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