8386814domain: NAppears in sequencesBinomial transform of 1,0,1,0,1,1,1,...at n=23A084635Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.at n=10A251647