A205012 Least s(k) such that n divides s(k)-s(j) for some j<k, where s(j)=C(2j-2,j-1).

2, 6, 20, 6, 6, 20, 20, 70, 20, 70, 3432, 924, 252, 20, 3432, 70, 70, 20, 20, 3432, 924, 3432, 70, 924, 70, 252, 924, 924, 252, 3432, 705432, 70, 3432, 70, 3432, 48620, 48620, 3432, 12870, 12870, 252, 924, 155117520, 3432, 48620, 184756, 3432

Offset

1,1

Comments

For a guide to related sequences, see A204892.

Links

Table of n, a(n) for n=1..47.

Mathematica

(See the program at A205010.)

Crossrefs

Cf. A205010, A204892.

Sequence in context: A298446 A364563 A357516 * A254120 A356778 A286426

Adjacent sequences: A205009 A205010 A205011 * A205013 A205014 A205015

Keyword

nonn

Author

Clark Kimberling, Jan 22 2012

Status

approved