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!)
A165258 Minimum value such that n occurs a(n) times, subject to the constraint that gcd(n,a(n)) = 1. 0

%I #2 Mar 30 2012 17:35:24

%S 1,3,2,3,2,5,2,5,4,7,4,7,4,9,8,9,6,11,6,9,8,9,6,11,6,11,8,11,6,13,8,

%T 13,8,13,12,13,10,15,10,17,10,17,10,15,14,15,10,17,10,17,10,15,12,17,

%U 12,15,14,15,12,17,12,15,16,15,12,19,12,19,14,19,14,19,14,19,14,21,16,19,14

%N Minimum value such that n occurs a(n) times, subject to the constraint that gcd(n,a(n)) = 1.

%o (PARI) count(v,t,n)=local(r);for(i=1,n,if(v[i]==t,r++));r

%o nexta(v,n)=for(i=1,n-1,if(gcd(i,n)==1&&count(v,i,n-1)<v[i],return(i)))

%o v=vector(100);v[1]=1;v[2]=3;for(n=3,100,v[n]=nexta(v,n));v

%Y Cf. A001462, A116548.

%K nonn

%O 1,2

%A _Franklin T. Adams-Watters_, Sep 11 2009

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 April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)