The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A044000 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A044000

Numbers k such that 0 and 5 occur juxtaposed in the base-10 representation of k but not of k+1.
(history; published version)

#12 by Bruno Berselli at Fri Aug 27 11:05:55 EDT 2021

STATUS

reviewed

approved

#11 by Joerg Arndt at Fri Aug 27 10:59:15 EDT 2021

STATUS

proposed

reviewed

#10 by Michael De Vlieger at Fri Aug 27 08:41:06 EDT 2021

STATUS

editing

proposed

#9 by Michael De Vlieger at Fri Aug 27 08:41:03 EDT 2021

LINKS

Michael De Vlieger, <a href="/A044000/b044000.txt">Table of n, a(n) for n = 1..10000</a>

#8 by Michael De Vlieger at Fri Aug 27 08:39:05 EDT 2021

MATHEMATICA

With[{j = 0, k = 5}, Position[Partition[Array[Boole[Total@ {SequenceCount[#, {j, k}], SequenceCount[#, {k, j}]} > 0] &@ IntegerDigits[#] &, 2100], 2, 1], {1, 0}][[All, 1]]] (* Michael De Vlieger, Aug 27 2021 *)

STATUS

proposed

editing

#7 by Jon E. Schoenfield at Fri Aug 27 07:08:54 EDT 2021

STATUS

editing

proposed

#6 by Jon E. Schoenfield at Fri Aug 27 07:08:50 EDT 2021

NAME

Numbers n k such that 0 and 5 occur juxtaposed in the base -10 representation of n k but not of nk+1.

STATUS

approved

editing

#5 by Russ Cox at Fri Mar 30 18:56:41 EDT 2012

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Clark Kimberling

Discussion

Fri Mar 30

18:56

OEIS Server: https://oeis.org/edit/global/285

#4 by N. J. A. Sloane at Fri May 11 03:00:00 EDT 2007

NAME

Numbers n such that 0 and 5 occur juxtaposed in the base 10 representation of n but not of n+1.

KEYWORD

nonn,base,new

#3 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

nonn,base,new

AUTHOR

Clark Kimberling, (ck6(AT)evansville.edu)