65766991

Properties

Appears in sequences

• Number of oriented multigraphs on n labeled arcs (without loops).at n=7A020556
• Triangle of certain generalized Bell numbers.at n=37A090210
• T(n,k) = Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).at n=37A208021
• Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 2 array with new integer colors introduced in row major order.at n=13A216078
• Prime numbersat n=3883117