212166domain: NAppears in sequencesProduct of the square matrix in A065941 and the column vector (1, 2, 3, ...)'.at n=20A131913Number of unlabeled balanced rooted semi-identity trees with 2n-1 nodes and depth n.at n=27A306274Number of regions in the hyperoctahedral (or cocktail party) graph of order n.at n=24A368755