16777246domain: NAppears in sequencesNumber of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nonincreasing x(i,j)-x(i-1,j) in the j direction.at n=22A250738Positive integers not the sum of iterated binary logs.at n=30A255310