A205154 The index j<k such that n divides s(k)-s(j) for some j, where s(j)=(prime(j+1) + prime(j+2))/2.

1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 6, 1, 4, 5, 2, 3, 1, 1, 2, 3, 1, 4, 2, 7, 1, 13, 6, 2, 8, 1, 2, 11, 1, 2, 2, 1, 6, 7, 2, 5, 1, 3, 4, 5, 2, 3, 1, 20, 2, 3, 1, 4, 2, 10, 1, 5, 19, 2, 4, 1, 2, 3, 1, 4, 2, 5, 1, 8, 4, 2, 8, 1, 5, 8, 2

Offset

1,3

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..80.

Mathematica

(See the program at A205153.)

Crossrefs

Cf. A205153, A204892.

Sequence in context: A323231 A175128 A359307 * A337772 A378444 A371243

Adjacent sequences: A205151 A205152 A205153 * A205155 A205156 A205157

Keyword

nonn

Author

Clark Kimberling, Jan 26 2012

Status

approved