“…D EXAMPLE 2. Let n = 6, i = 3, j = 3, A = (1,3,2), and let Np (miiin2im3 , be the number of paths from (0,0) to (2,2) which exceed P(mi,m2,m 3 )-Then the number of paths from (0,0) to (2,2) ,3)) = 3 + 3 = since P (1 , 3 ,2) = ENNE and ^(2,1,3) = NEEN.…”