1398065domain: NAppears in sequencesT(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically.at n=47A207088Number of 3 X n 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically.at n=7A207089