118868domain: NAppears in sequencesNumber of 5-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=10A187049a(n) = A306912(n) - 2.at n=36A209489p-INVERT of the odd positive integers, where p(S) = 1 - S - 4 S^2.at n=7A292487