111256domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of unlabeled digraphs on n nodes with k arcs up to reversing the arcs, k=0..n*(n-1).at n=61A126066Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=22A298090