52448

Appears in sequences

• Expansion of (1-x)^2/(1-3*x+x^3).at n=11A052545
• Number of simple connected graphs with n nodes and exactly 1 articulation point (cutpoints).at n=8A241767
• Numbers k such that (62*10^k - 197)/9 is prime.at n=20A294379
• Triangle read by rows: T(n,k) is the number of simple connected graphs on n unlabeled nodes with k articulation vertices, (0 <= k <= n).at n=46A325111
• Number of collinear triples in a 4 X n rectangular grid.at n=42A334706