Number of tilings of a 5 X n rectangle with n pentominoes of any shape.
A174249
Number of tilings of a 5 X n rectangle with n pentominoes of any shape.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =56a(4) =501a(5) =4006a(6) =27950a(7) =214689a(8) =1696781a(9) =13205354a(10) =101698212a(11) =782267786a(12) =6048166230a(13) =46799177380a(14) =361683136647
External references
- oeis: A174249