Number of ways to tile a 2 X n grid with dominoes and L-trominoes such that no four tiles meet at a corner.

A329185

Number of ways to tile a 2 X n grid with dominoes and L-trominoes such that no four tiles meet at a corner.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =10a(5) =22a(6) =49a(7) =105a(8) =227a(9) =494a(10) =1071a(11) =2322a(12) =5038a(13) =10927a(14) =23699a(15) =51405a(16) =111498a(17) =241837a(18) =524546a(19) =1137742a(20) =2467761a(21) =5352577a(22) =11609747a(23) =25181550a(24) =54618807a(25) =118468250a(26) =256957750a(27) =557341615a(28) =1208874523a(29) =2622050045

External references