I believe you are referring to the "Pentatonic Scale"

It's progression is...

Wholestep
One-and-a-half-step
Wholestep
Wholestep

So if you start on C#, the notes you use would be C#, D#, F#, G#, and A#.

I hope this helps!


@Anybody: If I'm wrong, please tell me. It's been a while since I've used pentatonic scales, lol


-Andrew