A233734 Central terms of triangles A019538 and A090582.

1, 6, 150, 8400, 834120, 129230640, 28805736960, 8734434508800, 3457819037312640, 1732015476199008000, 1070842073499515116800, 800968643959240044288000, 712900933001021056900608000, 744602794912654938776355840000, 901893717412811100821094451200000

Offset: 1

Author

Reinhard Zumkeller, Dec 15 2013

Keywords

• nonn

Comments

a(n) = A019538(2*n-1,n) = A090582(2*n-1,n).

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..200

Programs

Haskell

a233734 n = a019538 (2 * n - 1) n

Formula

a(n) = A129506(n) * n!.