85986

Appears in sequences

• Number of ways to place non-intersecting diagonals in convex (n+2)-gon so as to create no quadrilaterals.at n=10A054515
• Number of (w,x,y,z) with all terms in {0,...,n} such that range{w,x,y,z} is not one of the numbers w,x,y,z.at n=18A212569