1781622569domain: NAppears in sequencesRelated to Gray codes: see Comments lines.at n=8A091969Triangle read by rows: with a(n,m,k) defined in A091969: T(n,m)=a(n, 2^(n - 1), 2^(m - 1)).at n=43A143266Triangle read by rows: with a(n,m,k) defined in A091969: T(n,m)=a(n, 2^(n - 1), 2^(m - 1)).at n=44A143266