Number of tilings of a 5 X n rectangle using n pentominoes of any but the W shape.
A247774
Number of tilings of a 5 X n rectangle using n pentominoes of any but the W shape.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =56a(4) =461a(5) =3558a(6) =23966a(7) =178127a(8) =1362597a(9) =10194184a(10) =75684682a(11) =561877016a(12) =4192125848a(13) =31292310312a(14) =233221376211
External references
- oeis: A247774