168368

Appears in sequences

• Eighth column of quintinomial coefficients.at n=14A064057
• Number of (w,x,y,z) with all terms in {1,...,n} and w+x>=2y+2z.at n=33A212565
• Triangle read by rows: T(n,k) is the number of permutations of {1,...,n} whose longest embedded arithmetic progression has length k.at n=38A339941