Array read by antidiagonals: T(n,m) is the number of n X m binary arrays with all 1's connected, and all corners 1.
A389687
Array read by antidiagonals: T(n,m) is the number of n X m binary arrays with all 1's connected, and all corners 1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =7a(12) =12a(13) =7a(14) =1a(15) =1a(16) =17a(17) =58a(18) =58a(19) =17a(20) =1a(21) =1a(22) =41a(23) =293a(24) =540a(25) =293a(26) =41a(27) =1a(28) =1a(29) =99
External references
- oeis: A389687