This groove is a mix of Paradiddles (RLRR LRLL) and Paradiddle-diddles (RLRRLL)

There are four steps to the sequence:

1. start with 4 Paradiddles in the beginning ( alternating left and right) and then follow that with 1 paradiddle-diddle.

2. Start again with 4 Paradiddles followed by 2 paradiddle-diddles.

3. Start again with 4 paradiddles followed by 3 paradiddle-diddles

4. Start again with 4 paradiddles followed by 4 paradiddle-diddles

Repeat steps 1 through 4.

As you can see I'm just adding one paradiddle-diddle after each step.

Stickings:

Step 1: RLRR LRLL RLRR LRLL RLRRLL
Step 2: RLRR LRLL RLRR LRLL RLRRLL RLRRLL

And So On... (less info)