142380

Appears in sequences

• a(n) = a(n-1) + a(n-2) - a(n-4) starting a(0)=0, a(1)=1, a(2)=a(3)=3.at n=39A168637
• Number of length 1+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.at n=10A246893
• Triangular array: Row n shows the coefficients of polynomials p(n,x) defined in Comments.at n=56A249057
• Triangle read by rows: T(n,k) is the number of edge covers of the complete labeled graph on n nodes that are minimal and have exactly k edges, n>=2, 1<=k<=n-1.at n=42A281269
• Triangle read by rows: T(n,k) is the number of labeled point-determining graphs with n nodes and k edges, n >= 0, 0 <= k <= n*(n - 1)/2.at n=50A369283