What is this stitch called?

I wanted to edit this sweater and make it fit better and was wondering how to recreate this stitch where the sleeve is attached.

Can I do it on a regular machine or is it like one of those that can only be done on a fancy industrial machine or something ?

I wanted to edit this sweater and make it fit better and was wondering how to recreate this stitch where the sleeve is attached.

Can I do it on a regular machine or is it like one of those that can only be done on a fancy industrial machine or something ?