872526domain: NAppears in sequencesNumber of (n+5) X 8 0..1 matrices with each 6 X 6 subblock idempotent.at n=26A224572Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes counting as distinct different formations of transparent squares.at n=59A381057