Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, U, N.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =0a(8) =4a(9) =0a(10) =8a(11) =0a(12) =16a(13) =0a(14) =40a(15) =0a(16) =64a(17) =16a(18) =200a(19) =96a(20) =504a(21) =464a(22) =1528a(23) =1664a(24) =4376a(25) =5616a(26) =12792a(27) =18192a(28) =38264a(29) =58384