167168domain: NAppears in sequencesNumber of 4-step knight's tours on an (n+2) X (n+2) board summed over all starting positions.at n=21A186853G.f. = Phi*F^5, where Phi = g.f. for A028930, F = g.f. for A028959.at n=21A328536a(n) = A341886(n)/2; numbers k such that A307437(k) is even.at n=29A341887