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!)
A043985 Numbers k such that 3 and 8 occur juxtaposed in the base-9 representation of k but not of k+1. 0

%I #11 Jan 17 2023 15:15:29

%S 35,75,116,156,197,237,278,323,359,399,440,480,521,561,602,642,683,

%T 723,764,804,845,885,926,966,1007,1052,1088,1128,1169,1209,1250,1290,

%U 1331,1371,1412,1452,1493,1533,1574,1614,1655,1695

%N Numbers k such that 3 and 8 occur juxtaposed in the base-9 representation of k but not of k+1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,9],{3,8}]>0 || SequenceCount[ IntegerDigits[n,9],{8,3}]>0,1,0],{n,2000}],{1,0}][[All,1]] (* _Harvey P. Dale_, Jan 17 2023 *)

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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 July 23 04:43 EDT 2024. Contains 374544 sequences. (Running on oeis4.)