|
|
A044186
|
|
Numbers n such that string 6,6 occurs in the base 7 representation of n but not of n-1.
|
|
0
|
|
|
48, 97, 146, 195, 244, 293, 336, 391, 440, 489, 538, 587, 636, 679, 734, 783, 832, 881, 930, 979, 1022, 1077, 1126, 1175, 1224, 1273, 1322, 1365, 1420, 1469, 1518, 1567, 1616, 1665, 1708, 1763, 1812, 1861, 1910, 1959, 2008
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {6, 6}]>0, 1, 0], {n, 2100}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, May 31 2016 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|