The p19 in the paper is 31x21, but let it be 19x19. That's 361 cells, so 4.7x10^108 'soups' to search. The paper details the evolution of search methods. Brut

The p19 in the paper is 31x21, but let it be 19x19. That's 361 cells, so 4.7x10^108 'soups' to search. The paper details the evolution of search methods. Brute force-ish methods were responsible for discovery of some lower period oscillators.