用400个棋子摆放了5层空心方阵，最内层每边有几个棋子?;j8h6t4x2s9^4J9v5}7F9U1O;j4I
算式：提示:i9p2L6r/g;j8h6t4x2s9^4J9v5}7F9U1O;j4I
答：最内层每边有/L7X)h6W2h.g.R:u.x9_5v.o个棋子。;j8h6t4x2s9^4J9v5}7F9U1O;j4I