1073298domain: NAppears in sequencesNumber of (n+2) X (3+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 0 or 3 and no column sum 0 or 3.at n=29A258961Number of integers in n-th generation of tree T(-2/3) defined in Comments.at n=48A274150