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!)
A044985 Numbers n with property that in base 3 representation the numbers of 0's and 1's are 4 and 0, respectively. 1

%I

%S 162,488,492,504,540,648,1466,1478,1482,1514,1518,1530,1622,1626,1638,

%T 1674,1946,1950,1962,1998,2106,4400,4436,4448,4452,4544,4556,4560,

%U 4592,4596,4608,4868,4880,4884,4916,4920,4932,5024

%N Numbers n with property that in base 3 representation the numbers of 0's and 1's are 4 and 0, respectively.

%H Robert Israel, <a href="/A044985/b044985.txt">Table of n, a(n) for n = 1..10000</a>

%p seq(op(sort(map(t -> 2*(3^n+add(3^(i-1), i=t)),combinat:-choose(n,n-4)))),n=4..7); # _Robert Israel_, May 01 2018

%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 June 25 16:08 EDT 2022. Contains 354851 sequences. (Running on oeis4.)