2009833839domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..2 arrays with the upper median of every 2X2 subblock equal.at n=3A237300Number of (n+1)X(4+1) 0..2 arrays with the upper median of every 2X2 subblock equal.at n=3A237304T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median of every 2X2 subblock equal.at n=24A237308