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A044565
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Numbers n such that string 6,4 occurs in the base 7 representation of n but not of n+1.
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0
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46, 95, 144, 193, 242, 291, 328, 340, 389, 438, 487, 536, 585, 634, 671, 683, 732, 781, 830, 879, 928, 977, 1014, 1026, 1075, 1124, 1173, 1222, 1271, 1320, 1357, 1369, 1418, 1467, 1516, 1565, 1614, 1663, 1700, 1712, 1761, 1810
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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, 4}]>0, 1, 0], {n, 2000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Dec 10 2019 *)
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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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