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!)
A226781 Number of 1's in A132199 preceding the n-th Rowland prime, A137613(n). 0

%I #30 Jul 05 2013 04:26:02

%S 3,3,7,7,17,17,39,39,40,40,89,89,91,95,95,100,215,215,447,447,448,448,

%T 917,917,919,1862,1862,3750,3750,7528,7528,7533,15097,15097,15122,

%U 15122,15124,30284,30284,60606,60606,60607,60607,60656,60656,121356,121356

%N Number of 1's in A132199 preceding the n-th Rowland prime, A137613(n).

%C The length of the clusters of 1's in A132199 is 3, 0, 4, 0, 10, 0, 22, 0, 1, 0, 49,.. and this sequence here are the partial sums of these lengths.

%p cd1 := 0 ;

%p for i from 1 do

%p if A132199(i) = 1 then

%p cd1 := cd1+1 ;

%p else

%p printf("%d,\n",cd1) ;

%p end if;

%p end do: # _R. J. Mathar_, Jul 04 2013

%Y Cf. A132199, A137613.

%K nonn

%O 1,1

%A _Vladimir Shevelev_, Jun 29 2013

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 24 13:00 EDT 2024. Contains 371945 sequences. (Running on oeis4.)