209990

Appears in sequences

• Number of 7-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.at n=29A187512
• Coefficients of the nonnegative powers of rho(11) = 2*cos(Pi/11) when written in the power basis of the degree 5 number field Q(rho(11)). Negative of the coefficients of the first power.at n=22A231183