First differences of 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.
A270937
First differences of 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) =7a(1) =-4a(2) =40a(3) =-35a(4) =107a(5) =-107a(6) =211a(7) =-211a(8) =347a(9) =-347a(10) =515a(11) =-515a(12) =715a(13) =-715a(14) =947a(15) =-947a(16) =1211a(17) =-1211a(18) =1507a(19) =-1507a(20) =1835a(21) =-1835a(22) =2195a(23) =-2195a(24) =2587a(25) =-2587a(26) =3011a(27) =-3011a(28) =3467a(29) =-3467
External references
- oeis: A270937