Thread: 303 style sequencer
I read up on the manual a little. For Accent and Slide to be triggered, a voltage between 5-12v is needed. So I think the requirement would be pretty easy. An analog-style sequencer with a gate and at least 3 CV outs would work fine.
My thoughts are the Noise Engineering Mimetic Digitalis should work fine for this need. It has 16x4 CV tracks and a gate out. It will need a clock source.
The Make Noise Rene 1 or mk2 would also work.
https://www.acidlab.de/ProductAssets/M303/M303_manual_english.pdf