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!)
A043892 Numbers k such that 1 and 4 occur juxtaposed in the base-5 representation of k but not of k+1. 0
9, 21, 34, 49, 59, 71, 84, 96, 109, 121, 134, 146, 159, 174, 184, 196, 209, 221, 249, 259, 271, 284, 299, 309, 321, 334, 346, 359, 371, 384, 396, 409, 424, 434, 446, 459, 471, 484, 496, 509, 521, 549, 559, 571, 584, 596, 609, 621 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 5], {1, 4}]>0||SequenceCount[ IntegerDigits[ n, 5], {4, 1}]>0, 1, 0], {n, 700}], {1, 0}][[;; , 1]] (* Harvey P. Dale, May 30 2023 *)
CROSSREFS
Cf. A007091.
Sequence in context: A226355 A253052 A043112 * A332019 A146069 A140673
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 March 29 05:48 EDT 2024. Contains 371265 sequences. (Running on oeis4.)