Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
A284329
Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally 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) =49a(3) =415a(4) =2243a(5) =19385a(6) =122495a(7) =1021999a(8) =7013557a(9) =56860451a(10) =409700413a(11) =3264497171a(12) =24241023451a(13) =191315053703
External references
- oeis: A284329