I want to recreate the output of the reversible cellular automaton described in this page of the NKS book. The book specifies that this is a modified version of R214, where the new state (step+1) ...
I would like to run cellular automata in the vertical direction if row index is greater than column index and in the horizontal direction if row index is less than column index, in a square array ...
This computes and plots 127 steps of the evolution of 150R (the reversible version of rule 150). ...