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!)
A044324 Numbers n such that string 8,1 occurs in the base 9 representation of n but not of n-1. 0
73, 154, 235, 316, 397, 478, 559, 640, 657, 721, 802, 883, 964, 1045, 1126, 1207, 1288, 1369, 1386, 1450, 1531, 1612, 1693, 1774, 1855, 1936, 2017, 2098, 2115, 2179, 2260, 2341, 2422, 2503, 2584, 2665, 2746, 2827, 2844 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {8, 1}]>0, 1, 0], {n, 3000}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Dec 18 2018 *)

CROSSREFS

Sequence in context: A138642 A142179 A124363 * A044705 A248399 A071844

Adjacent sequences:  A044321 A044322 A044323 * A044325 A044326 A044327

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 21 23:58 EST 2022. Contains 350481 sequences. (Running on oeis4.)