Number of tilings of a 20 X n rectangle using 2*n copies of the disconnected shape [ooooo_____ooooo].
A322473
Number of tilings of a 20 X n rectangle using 2*n copies of the disconnected shape [ooooo_____ooooo].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =1a(13) =1a(14) =1a(15) =8a(16) =17a(17) =28a(18) =41a(19) =56a(20) =144a(21) =240a(22) =344a(23) =456a(24) =576a(25) =712a(26) =856a(27) =1008a(28) =1168a(29) =1336
External references
- oeis: A322473