Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 641", based on the 5-celled von Neumann neighborhood.
A273310
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 641", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =4a(2) =40a(3) =216a(4) =952a(5) =3960a(6) =16120a(7) =65016a(8) =261112a(9) =1046520a(10) =4190200a(11) =16769016a(12) =67092472a(13) =268402680a(14) =1073676280a(15) =4294836216
External references
- oeis: A273310