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#13 by Charles R Greathouse IV at Thu Nov 21 12:47:03 EST 2013
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| MATHEMATICA
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Select[Range[4000], MemberQ[Partition[IntegerDigits[#], 2, 1], {8, 4}]&&!MemberQ[Partition[IntegerDigits[#-1], 2, 1], {8, 4}]&] (* From }]&] (* _Harvey P. Dale, _, Mar 14 2011 *)
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Discussion
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Thu Nov 21
| 12:47
| OEIS Server: https://oeis.org/edit/global/2062
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#12 by Russ Cox at Fri Mar 30 18:56:44 EDT 2012
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Discussion
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Fri Mar 30
| 18:56
| OEIS Server: https://oeis.org/edit/global/285
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#11 by T. D. Noe at Mon Mar 14 15:04:50 EDT 2011
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#10 by Joerg Arndt at Mon Mar 14 12:28:20 EDT 2011
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Discussion
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Mon Mar 14
| 12:38
| Zak Seidov: Frankly, the sequence is rather dull, is it possible at least tag it "less" ? Sorry, Clark!
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#9 by Zak Seidov at Mon Mar 14 07:52:05 EDT 2011
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| MATHEMATICA
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Select[Range[4000], !StringFreeQ[ToString[#], "84"]&&StringFreeQ[ToString[#-1], "84"]&]
(* Zak Seidov Mar 14 2011 *)
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| STATUS
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approved
proposed
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Discussion
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Mon Mar 14
| 07:53
| Zak Seidov: As usual I'd try to suggest somewhat simpler Mmca :)
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#8 by D. S. McNeil at Mon Mar 14 07:43:44 EDT 2011
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#7 by Zak Seidov at Mon Mar 14 06:58:16 EDT 2011
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| NAME
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Numbers n such that string 8,4 '84' occurs in the base 10 representation of n but not of n-1.
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approved
proposed
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#6 by Harvey P. Dale at Mon Mar 14 06:55:09 EDT 2011
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#5 by Harvey P. Dale at Mon Mar 14 06:54:47 EDT 2011
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| MATHEMATICA
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Select[Range[4000], MemberQ[Partition[IntegerDigits[#], 2, 1], {8, 4}]&&!MemberQ[Partition[IntegerDigits[#-1], 2, 1], {8, 4}]&] (* From Harvey P. Dale, Mar 14 2011 *)
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| STATUS
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approved
proposed
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#4 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004
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| NAME
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StringNumbers n such that string 8,4 occurs in the base 10 representation of n but not of n-1.
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| KEYWORD
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nonn,base,new
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