It's called the Donthaveafcukingcluesoimgoingwithrandomsihtoffthet opofmyheadian Formula.

7, 8, 11, 4, 14, 16...

7+8=15,15-11=4,4x4=16,16-14=2,2+16=18

And the eighteenth Pokemon on my list is... Luvdisc.

Is it Luvdisc?