Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 609", based on the 5-celled von Neumann neighborhood.
A273209
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 609", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =4a(2) =29a(3) =168a(4) =629a(5) =2641a(6) =10800a(7) =43692a(8) =175608a(9) =699725a(10) =2807540a(11) =11255093a(12) =45020433a(13) =180044388a(14) =720221592a(15) =2880750425
External references
- oeis: A273209