Number of 3 X n 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.
A284224
Number of 3 X n 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) =4a(1) =19a(2) =70a(3) =499a(4) =3214a(5) =22729a(6) =163708a(7) =1209005a(8) =9018250a(9) =67956917a(10) =515031078a(11) =3926103884a(12) =30049105764a(13) =230871573750
External references
- oeis: A284224