Suyono escribió:
Best regards,
Zara
PS I was thinking the same solution, but I don not like sign(x). Still
trying another solution for the series.
> Another shot:Did you mean sign(n-1)*(n!!!)?
>
> sign(n-1)*(n-1)!!! ; n = 1, 2, 3, ...
>
> Sign function: Returns the sign of a number: 1 if the
> number is positive, zero if the number is zero, or -1
> if the number is negative. (Try on MS Excel.)
>
> The fifth term is 4!!! = 24!! = approx. (6.20448E+23)!
>
Best regards,
Zara
PS I was thinking the same solution, but I don not like sign(x). Still
trying another solution for the series.