Number of tilings of {1...n} by translation and reflection of a single set.

Terms

a(0) =1a(1) =2a(2) =2a(3) =4a(4) =2a(5) =8a(6) =2a(7) =13a(8) =6a(9) =20a(10) =2a(11) =56a(12) =2a(13) =68a(14) =12a(15) =160a(16) =2a(17) =299a(18) =2a(19) =584a(20) =18a(21) =1028a(22) =2a(23) =2338a(24) =8a(25) =4100a(26) =38a(27) =8456a(28) =2a(29) =16576