The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A044649 Numbers n such that string 1,8 occurs in the base 9 representation of n but not of n+1. 1
 17, 98, 161, 179, 260, 341, 422, 503, 584, 665, 746, 827, 890, 908, 989, 1070, 1151, 1232, 1313, 1457, 1475, 1556, 1619, 1637, 1718, 1799, 1880, 1961, 2042, 2123, 2204, 2285, 2348, 2366, 2447, 2528, 2609, 2690, 2771, 2852 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Flatten[Position[Partition[Table[If[MemberQ[Partition[ IntegerDigits[ n, 9], 2, 1], {1, 8}], 1, 0], {n, 3000}], 2, 1], {1, 0}]] (* Harvey P. Dale, Mar 13 2015 *) SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {1, 8}]>0, 1, 0], {n, 3000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Jan 30 2024 *) CROSSREFS Sequence in context: A282997 A231667 A044268 * A253707 A160827 A231671 Adjacent sequences: A044646 A044647 A044648 * A044650 A044651 A044652 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.

Last modified August 9 16:51 EDT 2024. Contains 375044 sequences. (Running on oeis4.)