270468

Appears in sequences

• Number of 4-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=25A187859
• Numbers n such that n^2 + n(n+1)/2 is an oblong number (A002378).at n=6A220755