Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 521", based on the 5-celled von Neumann neighborhood.
A272735
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 521", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =4a(2) =24a(3) =116a(4) =568a(5) =2500a(6) =10176a(7) =41116a(8) =164728a(9) =658292a(10) =2623192a(11) =10451916a(12) =41644088a(13) =166056252a(14) =662379024a(15) =2643704140
External references
- oeis: A272735