Array T(n,m) read by antidiagonals: In an n X m grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; T(n,m) is the number of solutions.

A375858

Array T(n,m) read by antidiagonals: In an n X m grid draw straight walls between cells, starting at a border, such that the resulting figure is connected and has only one-cell wide paths; T(n,m) is the number of solutions.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =26a(12) =56a(13) =26a(14) =1a(15) =1a(16) =57a(17) =212a(18) =212a(19) =57a(20) =1a(21) =1a(22) =120a(23) =701a(24) =1112a(25) =701a(26) =120a(27) =1a(28) =1a(29) =247

External references