155328

Appears in sequences

• Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, three, four or six distinct values for every i,j,k<=n.at n=10A211575
• Irregular triangle read by rows: T(n,k) is the number of Hamiltonian cycles in the Kneser graph K(n,k), 1 <= k < n/2.at n=5A354568