34360

Appears in sequences

• Number of ways to place 3 nonattacking kings on a 3 X n board.at n=21A172202
• Number of 5-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.at n=27A187510
• a(n) = n*(n^2 + 3*n - 2)/2.at n=40A256857
• Number of n X 7 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=7A280553
• Irregular table read by rows: Take a decagon with all diagonals drawn, as in A333139. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=14A332417