The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A043969 Numbers k such that 1 and 3 occur juxtaposed in the base-9 representation of k but not of k+1. 0
12, 28, 93, 116, 174, 190, 260, 271, 336, 352, 417, 433, 498, 514, 579, 595, 660, 676, 741, 757, 822, 845, 903, 919, 1052, 1065, 1081, 1146, 1162, 1227, 1243, 1308, 1324, 1389, 1405, 1470, 1486, 1551, 1574, 1632, 1648, 1718 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {1, 3}]>0 || SequenceCount[ IntegerDigits[n, 9], {3, 1}]>0, 1, 0], {n, 1800}], {1, 0}][[All, 1]] (* Harvey P. Dale, Feb 05 2023 *)
CROSSREFS
Cf. A007095.
Sequence in context: A097427 A039366 A043189 * A204386 A078441 A351104
KEYWORD
nonn,base
AUTHOR
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 25 16:30 EDT 2024. Contains 372801 sequences. (Running on oeis4.)