62274domain: NAppears in sequencesa(0) = 0, a(n+1) = a(n) + next prime larger than a(n).at n=15A063807Number of (5+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=7A250787