Thread: Find the function from a sequence.

There are two sequences I am unable to solve and any help on this matter would be appreciated.

1,3,15,105,945,10395
2,4,16,256,65536,4294967296

I think the second sequence can be defined as

when n = 1, the answer is 2
when n > 1, f(n-1)^2

I am still having problems with the first sequence

1)

1
1*3 = 3
3*5 = 15
15*7 =105
105*9 =945
945*11=10395
Hence the

2)
2
2^2=4
4^2=16
16^2=256
256^2=65536
65536^2=4294967296


Hence

Originally Posted by vexiked

There are two sequences I am unable to solve and any help on this matter would be appreciated.

1,3,15,105,945,10395

Note here that:

1*3 = 3
3*5 = 15
15*7 = 105
105*9 = 945
945*11 = 10395

So we can say that if , then

Does this make sense?

2,4,16,256,65536,4294967296

Note here that








Thus, if , then

Does this make sense?

Thank you all for you help! much appreciated!