170456

Appears in sequences

• a(n) = 4*n*(4*n^2 + 1).at n=22A144965
• Number of 7-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=21A187381
• a(n) = (n^7 - 21*n^3 + 20*n)/210.at n=12A239095