Number of tilings of a 5 X n rectangle using n pentominoes of any but the N shape.
A247769
Number of tilings of a 5 X n rectangle using n pentominoes of any but the N shape.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =48a(4) =423a(5) =3082a(6) =18998a(7) =133083a(8) =965175a(9) =6907447a(10) =48357538a(11) =337492571a(12) =2379164196a(13) =16812509746a(14) =118525108279a(15) =834050273099
External references
- oeis: A247769