|
|
A044146
|
|
Numbers n such that string 1,1 occurs in the base 7 representation of n but not of n-1.
|
|
0
|
|
|
8, 56, 106, 155, 204, 253, 302, 351, 392, 449, 498, 547, 596, 645, 694, 742, 792, 841, 890, 939, 988, 1037, 1085, 1135, 1184, 1233, 1282, 1331, 1380, 1428, 1478, 1527, 1576, 1625, 1674, 1723, 1771, 1821, 1870, 1919, 1968
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {1, 1}]>0, 1, 0], {n, 2000}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 24 2017 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|