94272domain: NAppears in sequencesNumber of rhombi on an n X n grid (or geoboard).at n=24A189418Number of ways to place n nonattacking composite pieces rook + rider[3,3] on an n X n chessboard.at n=8A189839Numbers for which the number of divisors and the sum of the distinct prime divisors are both perfect.at n=8A233482