[size=50][size=85]Folge((x(P) + ((k - 1) y(C) + y(P)) (x(Q) - x(P)) / (Wenn(n ≟ 1, 0, Wenn(Mod(n, 2) ≟ 0, n, n - 1)) y(C) + (-1)^(n + 1) y(Q) + y(P)), Wenn(Mod(k, 2) ≟ 0, y(C), 0)),k,1,n)[/size][/size]