Number of tilings of a 6 X n rectangle using right trominoes and 2 X 2 tiles.
A219947
Number of tilings of a 6 X n rectangle using right trominoes and 2 X 2 tiles.
Terms
- a(0) =1a(1) =0a(2) =5a(3) =8a(4) =37a(5) =136a(6) =545a(7) =2376a(8) =10534a(9) =46824a(10) =212926a(11) =961552a(12) =4374949a(13) =19888832a(14) =90570555a(15) =412561096a(16) =1880381253a(17) =8572076760a(18) =39086502817a(19) =178240531672a(20) =812868845530
External references
- oeis: A219947