26501904domain: NAppears in sequencesa(n) = A045873(n)^2.at n=11A094423Number of (n+2) X 4 binary arrays avoiding patterns 001 and 011 in rows and columns.at n=18A202094Number of (n+1)X(3+1) 0..1 arrays with nondecreasing sum of every two consecutive values in every row and column.at n=19A250427