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A051018
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Numbers that are 2-persistent but not 3-persistent.
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10
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1023456789, 1023456879, 1023457689, 1023457869, 1023458679, 1023458769, 1023465789, 1023465879, 1023467589, 1023467859, 1023468579, 1023468759, 1023475689, 1023475869, 1023476589, 1023476859, 1023478569, 1023478659
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OFFSET
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1,1
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COMMENTS
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A number n is k-persistent iff all of {n, 2n,..., kn} are pandigital (in the sense of A171102).
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LINKS
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PROG
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(PARI) is_A051018(n, k=3)=10>#Set(Vec(Str(k*n))) & !while(k--, 9<#Set(Vec(Str(k*n)) | return) \\ M. F. Hasler, Jan 10 2012
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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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EXTENSIONS
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STATUS
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approved
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