Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood.
A270207
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =4a(2) =32a(3) =164a(4) =800a(5) =3505a(6) =14413a(7) =57732a(8) =232124a(9) =928469a(10) =3723528a(11) =14911100a(12) =59687737a(13) =238828205a(14) =955470060a(15) =3822006173
External references
- oeis: A270207