Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 390", based on the 5-celled von Neumann neighborhood.
A271599
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 390", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =5a(2) =20a(3) =65a(4) =225a(5) =796a(6) =3220a(7) =11880a(8) =47172a(9) =188004a(10) =747464a(11) =2982848a(12) =11909008a(13) =47634836a(14) =190514480a(15) =761884472
External references
- oeis: A271599