831384domain: NAppears in sequencesArray T(n,m) = A177944(2*n,2*m) read by antidiagonals.at n=49A177970Number of permutations p of [n] such that p(i) > p(i+1) iff i == 1 (mod 9).at n=19A250265Number of permutations p of [n] such that p(i) > p(i+1) iff i == 0 (mod 9).at n=19A250286