Automatic alternating dates entry

[Usercode]

In excel, I can enter the date lets say in A1 = 07/13/2018, and in A2 I can enter A1+3 etc to get 07/16/2016 and copy down the cell as i need. So I won't need to enter dates manually every time for scheduled events.

Is there a way to do this with two dates? Lets say I start with A1 = 07/13/2018, as I copy down every time, the first next cell will +3, and the next copy down it will be +5, and the next will be +3, and then +5 again etc. it will go on like this.
How can I do this? Thanks.

 

[Nine Zero]

yea simply add the 2nd condition in your selction before copying down the column

so do this

	A
1	07/13/18
2	=A1+3
3	=A2+5
4

<tbody>
</tbody>

Then highlight A2:A3 and drag that selection downward

 

[Usercode]

yes, this works. Is there an alternative method? because I'm going upwards, and adding rows as I need.