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

3, 3, 7, 7, 17, 17, 39, 39, 40, 40, 89, 89, 91, 95, 95, 100, 215, 215, 447, 447, 448, 448, 917, 917, 919, 1862, 1862, 3750, 3750, 7528, 7528, 7533, 15097, 15097, 15122, 15122, 15124, 30284, 30284, 60606, 60606, 60607, 60607, 60656, 60656, 121356, 121356

Offset

1,1

Comments

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.

Links

Table of n, a(n) for n=1..47.

Maple

cd1 := 0 ;
for i from 1 do
    if A132199(i) = 1 then
        cd1 := cd1+1 ;
    else
        printf("%d, \n", cd1) ;
    end if;
end do: # R. J. Mathar, Jul 04 2013

Crossrefs

Cf. A132199, A137613.

Sequence in context: A263869 A174583 A370202 * A147144 A152113 A146149

Adjacent sequences: A226778 A226779 A226780 * A226782 A226783 A226784

Keyword

nonn

Author

Vladimir Shevelev, Jun 29 2013

Status

approved