A136109 a(1) = 1. After the initial 1, follow with runs of integers; the n-th run of p(a(n)) terms is (1,2,3,4,....,p(a(n))), where p(m) is the m-th prime.

1, 1, 2, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 1, 2, 3, 1, 2, 1

Offset

1,3

Links

Table of n, a(n) for n=1..104.

Example

Runs of integers bracketed by parentheses. (Note that n-th run {after the initial 1} has exactly p(a(n)) terms.)
1,(1,2),(1,2),(1,2,3),(1,2),(1,2,3),(1,2),(1,2,3),(1,2,3,4,5),(1,2),(1,2,3),(1,2),(1,2,3),(1,2,3,4,5),(1,2),(1,2,3),(1,2),(1,2,3),(1,2,3,4,5),(1,2),(1,2,3),(1,2,3,4,5),(1,2,3,4,5,6,7),(1,2,3,4,5,6,7,8,9,10,11),...

Crossrefs

Sequence in context: A270808 A290532 A080237 * A105265 A351468 A193360

Adjacent sequences: A136106 A136107 A136108 * A136110 A136111 A136112

Keyword

nonn

Author

Leroy Quet, Mar 15 2008

Status

approved