A205028 The index j<k such that n divides s(k)-s(j), where k is the least index (A205018) for which such j exists, and s(k)=k*(k+1).

1, 1, 2, 1, 1, 2, 2, 3, 1, 1, 4, 2, 5, 2, 3, 7, 7, 1, 8, 1, 5, 4, 10, 2, 2, 5, 1, 1, 13, 3, 14, 15, 2, 7, 1, 2, 17, 8, 3, 1, 19, 5, 20, 3, 4, 10, 22, 6, 3, 2, 5, 4, 25, 1, 8, 4, 6, 13, 28, 3

Offset

1,3

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..60.

Mathematica

(See the program at A205018.)

Crossrefs

Cf. A205018, A204892.

Sequence in context: A047060 A050167 A047050 * A325055 A325526 A057820

Adjacent sequences: A205025 A205026 A205027 * A205029 A205030 A205031

Keyword

nonn

Author

Clark Kimberling, Jan 22 2012

Status

approved