135315

Appears in sequences

• Number of mobiles (circular rooted trees) with n nodes and 8 leaves.at n=7A055346
• Number of zero-sum nX3 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.at n=3A202132
• Number of zero-sum nX4 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.at n=2A202133
• T(n,k) = Number of zero-sum n X k -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.at n=17A202134
• T(n,k) = Number of zero-sum n X k -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.at n=18A202134
• a(n) = n*(n + 1)*(n^2 - n + 3)/6.at n=30A257055