Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 438", based on the 5-celled von Neumann neighborhood.
A272218
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 438", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =5a(2) =20a(3) =100a(4) =352a(5) =1448a(6) =5304a(7) =21816a(8) =85649a(9) =340513a(10) =1365568a(11) =5470788a(12) =21883824a(13) =87556401a(14) =350107285a(15) =1400656852
External references
- oeis: A272218