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!)
A043242 Numbers k such that 3 and 6 occur juxtaposed in the base-10 representation of k but not of k-1. 0

%I #10 Aug 23 2021 20:52:31

%S 36,63,136,163,236,263,336,360,436,463,536,563,630,663,736,763,836,

%T 863,936,963,1036,1063,1136,1163,1236,1263,1336,1360,1436,1463,1536,

%U 1563,1630,1663,1736,1763,1836,1863,1936,1963,2036

%N Numbers k such that 3 and 6 occur juxtaposed in the base-10 representation of k but not of k-1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n],{3,6}]>0 || SequenceCount[ IntegerDigits[n],{6,3}]>0,1,0],{n,2100}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Sep 18 2019 *)

%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 25 08:17 EDT 2024. Contains 374586 sequences. (Running on oeis4.)