A122807 Least positive k such that n is equal to arithmetic mean of k consecutive primes, or 0 if no such k exists.

0, 1, 1, 2, 1, 2, 1, 0, 2, 0, 1, 2, 1, 0, 2, 0, 1, 2, 1, 0, 2, 4, 1, 0, 0, 2, 0, 0, 1, 2, 1, 0, 0, 2, 0, 0, 1, 4, 2, 0, 1, 2, 1, 0, 2, 4, 1, 0, 11, 2, 8, 22, 1, 0, 4, 2, 0, 0, 1, 2, 1, 0, 0, 2, 0, 0, 1, 4, 2, 28, 1, 2, 1, 0, 0, 2, 6, 10, 1, 0, 2, 6, 1, 0, 0, 2, 4, 0, 1, 0, 12, 6, 2, 0, 21, 8, 1, 0, 2, 40, 1, 2

Offset

1,4

Comments

Inspired by A122480.

Links

Table of n, a(n) for n=1..102.

Crossrefs

Cf. A060864 (indices of 0 terms), A000040 (indices of 1 terms), A024675 (indices of 2 terms).

Sequence in context: A380463 A118829 A118832 * A105700 A378534 A366077

Adjacent sequences: A122804 A122805 A122806 * A122808 A122809 A122810

Keyword

nonn

Author

Ray Chandler, Sep 25 2006

Status

approved