281988

Appears in sequences

• Number of 5-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=11A187860
• E.g.f. F(x) satisfies F_{n}(0) = (-F_{n-1}(0) + Sum_{k=0..n-1} (F_{k}(0)*(-1)^(n-k+1)*binomial(n+1,k)))/n, with F_{0}(0) = -1, where F_{k}(x) is the k-th derivative of F(x).at n=9A373174