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!)
A033072 Numbers n with property that all pairs of consecutive base 7 digits differ by 1. 0
1, 2, 3, 4, 5, 6, 7, 9, 15, 17, 23, 25, 31, 33, 39, 41, 47, 50, 64, 66, 105, 107, 121, 123, 162, 164, 178, 180, 219, 221, 235, 237, 276, 278, 292, 333, 335, 350, 352, 448, 450, 464, 466, 736, 750, 752, 848, 850, 864, 866, 1134, 1136 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..52.

MATHEMATICA

Join[Range[6], Select[Range[2000], Union[Abs[Differences[IntegerDigits[#, 7]]]]=={1}&]] (* Harvey P. Dale, Dec 28 2011 *)

CROSSREFS

Sequence in context: A281809 A143286 A160339 * A030287 A271950 A263482

Adjacent sequences:  A033069 A033070 A033071 * A033073 A033074 A033075

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

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 June 25 03:37 EDT 2022. Contains 354835 sequences. (Running on oeis4.)