Business owner and matched 401k?

I am a sole proprietor, which offers some very decent tax benefits itself, though self employment often makes it difficult to offer some 'employee benefits' given that I'll just be taxed for them on one side or another. With that I wanted to see if there is a route for a business owner to do 401k matching as a better retirement vehicle, but search results to these inquiries are pulling up a bunch of other 401k related topics. Is this something possible with US tax law? Can any of you point me to

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