120018

Appears in sequences

• Number of nX2 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.at n=9A283380
• Number of ways to write n as an ordered sum of 6 prime powers (including 1).at n=35A341135
• Triangle read by rows: T(n,k) is the number of unlabeled connected multigraphs with n edges on k nodes and degree >= 3 at each node, loops allowed, n >= 2, 1 <= k <= floor(2*n/3).at n=60A360862