12319200domain: NAppears in sequencesNumber of 8-turn rook's tours on an n X n board summed over all starting positions.at n=4A187195Expansion of ( (1/x) * Series_Reversion( x * ((1-x) / C(x))^2 ) )^(1/2), where C(x) is the g.f. of A000108.at n=8A381818