242688domain: NAppears in sequencesTriangle related to generalized Catalan numbers A064340.at n=33A067327Number of singly defective permutations of 1..n+2 with exactly 2 maxima.at n=5A183265T(n,k) is the number of singly defective permutations of 1..n+2*k-2 with exactly k maxima.at n=26A183270