
COMMENTS

Starting population for n is n^2.
a(n)=0 for n={1,4,8,12,15,20,..?..}, meaning that after a particular, finite number of generations, the grid is forever empty.
a(n) reaches a nonempty, single static state after a particular, finite number of generations for n={2,5,6,10,13,14,16,18,22,24,26,27,28,..?..}.
a(n) enters a constant population, infinite, twostate and closed loop after a particular, finite number of generations for n={3,7,9,11,17,19,21,23,25,..?..}.
For even generations > 153, a(29)=128. For odd generations > 153, a(29)=120. n=29 is the first value of a(n) for which the system enters a twostate loop with variable population after a particular, finite number of generations.
