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A044244
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Numbers n such that string 7,1 occurs in the base 8 representation of n but not of n-1.
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0
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57, 121, 185, 249, 313, 377, 441, 456, 505, 569, 633, 697, 761, 825, 889, 953, 968, 1017, 1081, 1145, 1209, 1273, 1337, 1401, 1465, 1480, 1529, 1593, 1657, 1721, 1785, 1849, 1913, 1977, 1992, 2041, 2105, 2169, 2233, 2297, 2361
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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, 8], {7, 1}]>0, 1, 0], {n, 2500}], {0, 1}][[All, 2]] (* Harvey P. Dale, Dec 17 2021 *)
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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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