login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A044120 Numbers n such that string 3,0 occurs in the base 6 representation of n but not of n-1. 1

%I

%S 18,54,90,108,126,162,198,234,270,306,324,342,378,414,450,486,522,540,

%T 558,594,630,648,702,738,756,774,810,846,882,918,954,972,990,1026,

%U 1062,1098,1134,1170,1188,1206,1242,1278,1314,1350

%N Numbers n such that string 3,0 occurs in the base 6 representation of n but not of n-1.

%H Harvey P. Dale, <a href="/A044120/b044120.txt">Table of n, a(n) for n = 1..1000</a>

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,6],{3,0}]>0,1,0],{n,1500}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Apr 23 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 28 12:39 EDT 2020. Contains 338055 sequences. (Running on oeis4.)