Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood.
A270934
Number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =8a(2) =4a(3) =44a(4) =9a(5) =116a(6) =9a(7) =220a(8) =9a(9) =356a(10) =9a(11) =524a(12) =9a(13) =724a(14) =9a(15) =956a(16) =9a(17) =1220a(18) =9a(19) =1516a(20) =9a(21) =1844a(22) =9a(23) =2204a(24) =9a(25) =2596a(26) =9a(27) =3020a(28) =9a(29) =3476
External references
- oeis: A270934