3mm led wiring to flash sequentially

I have 20 LEDs that I am looking to have them light up sequentially or "chase" like. I havent bought the LEDs yet. I am wondering what would I need to make the LEDs perform in the way I want. Im thinking that I will just need the LEDs, resistors, and some type of board correct? Therefore getting prewired LEDs are not a good choice? Ex. LED 1 --> LED 2 --> LED 3 --> LED 4 LED 1 lights up...LED 2 lights up while LED 1 turns off LED 2 turns off when LED 3 lights up...etc Thanks for the assist LEDs are our best friends

He is the one I've seen before, http://www.elecfree.com/electronic/sequential-braketurn-lights-with-ic-40947555/

best thing I can suggest is to use google -> led chaser circuit. Here is something I found which might interest you, seems pretty easy. http://www.aaroncake.net/circuits/chaser.asp Hope that helps.