T(n,k) is the number of n X k 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above.
A203181
T(n,k) is the number of n X k 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =2a(7) =2a(8) =2a(9) =2a(10) =3a(11) =4a(12) =7a(13) =4a(14) =3a(15) =4a(16) =6a(17) =17a(18) =17a(19) =6a(20) =4a(21) =5a(22) =10a(23) =41a(24) =59a(25) =41a(26) =10a(27) =5a(28) =7a(29) =18
External references
- oeis: A203181