- 04 Mar '10 20:08

the 0 in the sequence gives the solution*Originally posted by iamatiger***Hmm, the answer seems to depend on whether the sequence is:**

1!

2!!

3!!!

or

1!!!

2!!!

3!!!

which give the same answers up to the third value, which is all we have.

cant be 0!!! =1, thus the first term must be zero

so

0

1!

2!!

3!!!

4!!!!

nice catch