510835domain: NAppears in sequencesTriangle read by rows: T(n,k) (n >= 2, 1 <= k <= n-1) = Euclidean distance degree of variety of n X n matrices of rank <= k.at n=17A232496Triangle read by rows: T(n,k) (n >= 2, 1 <= k <= n-1) = Euclidean distance degree of variety of n X n matrices of rank <= k.at n=18A232496