Adding pairs of numbers in sequence


#1

I am trying to add (4) numbers in a list using the following logic:

#1 + #2
#2 + #3
#3 + #4

Thanks in advance for the help.


#2

i tried this


#3

That didn’t necessarily do what I wanted it to @Marcel_Rijsmus but it did spark something that took me to the solution. Thank You. See below.


#4

A bit shorter could be: