119092domain: NAppears in sequencesNumber of 6-step one space at a time bishop's tours on an n X n board summed over all starting positions.at n=23A187159E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * Product_{k=1..n} A(k*x).at n=6A230317Expansion of Sum_{1<=i<=j<=k} q^(i+j+k)/( (1-q^i)*(1-q^j)*(1-q^k) )^2.at n=21A374930