Array read by antidiagonals: T(m,n) is the number of m X n binary arrays with all 1's connected and no 1 having more than two 1's adjacent.
A391820
Array read by antidiagonals: T(m,n) is the number of m X n binary arrays with all 1's connected and no 1 having more than two 1's adjacent.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =6a(4) =13a(5) =6a(6) =10a(7) =33a(8) =33a(9) =10a(10) =15a(11) =69a(12) =108a(13) =69a(14) =15a(15) =21a(16) =131a(17) =291a(18) =291a(19) =131a(20) =21a(21) =28a(22) =235a(23) =710a(24) =1044a(25) =710a(26) =235a(27) =28a(28) =36a(29) =407
External references
- oeis: A391820