Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 491", based on the 5-celled von Neumann neighborhood.
A272540
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 491", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =5a(2) =32a(3) =164a(4) =800a(5) =3276a(6) =13356a(7) =53784a(8) =215768a(9) =864108a(10) =3458412a(11) =13837464a(12) =55357400a(13) =221444460a(14) =885807468a(15) =3543288984
External references
- oeis: A272540