403620domain: NAppears in sequencesNumber of ways to place 2 nonattacking queens on an n X n toroidal board.at n=30A172517Number of ways to place 2 nonattacking nightriders on an n X n toroidal board.at n=30A196812Govindarajan's triangle beta arising in enumeration of multi-dimensional partitions, read by rows.at n=23A216808