Number stack formula/Macro?

[QuantEdge]

hi excelers,
Is then any way to place a previous input number below a new input enter number.
So I enter in say "5", and if next I enter say "3" the "5" will be placed below the "3" so-on so-on all the way down the array!
It seems like a simple function but Is this possible with formula alone or will it need MACRO to do it?
Any suggestions or ideas are welcome*