Talk:Narayana number

This is the talk page for discussing improvements to the Narayana number article.
This is not a forum for general discussion of the article's subject.

Put new text under old text. Click here to start a new topic.
New to Wikipedia? Welcome! Learn to edit; get help.

Article policies

Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL

Some trouble with the formula ?[edit]

It seems, according to Sloane, that the formula should read

$N(n,k)={\frac {1}{k}}{n \choose {k-1}}{n-1 \choose k-1}$

ManiacParisien (talk) 12:40, 4 December 2013 (UTC)[reply]

That's the same, just written differently. Both expressions evaluate to

N(n,k)={\frac {n!(n-1)!}{k!(k-1)!(n-k+1)!(n-k)!}}\;.

MuDavid (talk) 08:12, 9 May 2017 (UTC)[reply]