269348domain: NAppears in sequencesT(n,2), array T as in A054126.at n=14A054128Number of 4-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=29A187048Array read by falling antidiagonals: T(n,k) = numerator(Sum_{x>0} (x^n)/(k^x)); n >= 0 and k >= 2.at n=52A374895