3055869419domain: NAppears in sequencesNumber of ways to place any number of black and any number of white nonattacking knights on a (n+2)X(1+2) board.at n=6A251526T(n,k)=Number of ways to place any number of black and any number of white nonattacking knights on a (n+2)X(k+2) board.at n=21A251531