|
|
A044314
|
|
Numbers n such that string 7,0 occurs in the base 9 representation of n but not of n-1.
|
|
0
|
|
|
63, 144, 225, 306, 387, 468, 549, 567, 630, 711, 792, 873, 954, 1035, 1116, 1197, 1278, 1296, 1359, 1440, 1521, 1602, 1683, 1764, 1845, 1926, 2007, 2025, 2088, 2169, 2250, 2331, 2412, 2493, 2574, 2655, 2736, 2754, 2817
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {7, 0}]>0, 1, 0], {n, 3000}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Sep 06 2015 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|