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A044125
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Numbers n such that string 3,5 occurs in the base 6 representation of n but not of n-1.
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1
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23, 59, 95, 131, 138, 167, 203, 239, 275, 311, 347, 354, 383, 419, 455, 491, 527, 563, 570, 599, 635, 671, 707, 743, 779, 786, 815, 828, 887, 923, 959, 995, 1002, 1031, 1067, 1103, 1139, 1175, 1211, 1218, 1247, 1283, 1319, 1355, 1391, 1427, 1434, 1463, 1499
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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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MATHEMATICA
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f[n_] := Length[StringPosition[ToString[FromDigits[IntegerDigits[n, 6]]], "35", 1]]; Select[Table[n, {n, 10000}], f[#] > 0 && f[# - 1] == 0 &] (* Vladimir Joseph Stephan Orlovsky, Jul 20 2011 *)
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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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