Number of n X 3 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
A284217
Number of n X 3 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
Terms
- a(0) =3a(1) =13a(2) =70a(3) =467a(4) =3224a(5) =23218a(6) =170155a(7) =1264605a(8) =9488108a(9) =71718240a(10) =545264052a(11) =4165262662a(12) =31943452900a(13) =245786167555
External references
- oeis: A284217