A205387 The index j<k such that n divides s(k)-s(j) for some j, where s(j)=(1/2)C(2j,j).

1, 1, 1, 2, 3, 5, 2, 2, 1, 5, 6, 5, 4, 5, 5, 2, 1, 3, 6, 4, 5, 6, 3, 5, 3, 7, 2, 5, 3, 5, 10, 2, 6, 1, 1, 3, 1, 6, 7, 4, 2, 5, 14, 6, 3, 3, 5, 5, 1, 4

Offset

1,4

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..50.

Mathematica

(See the program at A205386.)

Crossrefs

Cf. A205386, A204892.

Sequence in context: A082117 A269701 A011157 * A365424 A060441 A255913

Adjacent sequences: A205384 A205385 A205386 * A205388 A205389 A205390

Keyword

nonn

Author

Clark Kimberling, Jan 27 2012

Status

approved