203448

Appears in sequences

• Number of 3-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.at n=30A187851
• Number of 3X3X3 triangular 0..n arrays with some element plus some adjacent element totalling n exactly once.at n=7A270258
• Expansion of 1/(1 - Sum_{k>=1} mu(k)*x^k*(1 + x^k)/(1 - x^k)^3).at n=11A307075