A205779 - OEIS

A205779

Least positive integer j such that n divides C(k)-C(j), where k, as in A205778, is the least number for which there is such a j, and C=A000108 (Catalan numbers).

1, 1, 2, 1, 2, 2, 4, 2, 3, 2, 6, 2, 1, 4, 5, 4, 2, 5, 3, 2, 2, 6, 12, 4, 3, 2, 6, 4, 3, 5, 7, 2, 6, 2, 5, 2, 3, 10, 8, 2, 1, 2, 5, 8, 5, 12, 4, 4, 9, 9, 2, 8, 3, 2, 6, 5, 3, 2, 4, 2, 2, 2, 14, 8, 2, 8, 7, 2, 12, 5, 8, 12, 2, 10, 3, 10, 7, 8, 3, 8, 2, 2, 4, 2, 10, 6, 3, 8, 13, 5, 7, 12, 6

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OFFSET

1,3

COMMENTS

For a guide to related sequences, see A204892.

LINKS

Table of n, a(n) for n=1..93.

EXAMPLE

1 divides C(2)-C(1) -> k=2, j=1

2 divides C(3)-C(1) -> k=3, j=1

3 divides C(3)-C(2) -> k=3, j=2

4 divides C(3)-C(1) -> k=3, j=1