Number of tilings of a 5 X n rectangle using n pentominoes of any but the L shape.
A247768
Number of tilings of a 5 X n rectangle using n pentominoes of any but the L shape.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =36a(4) =177a(5) =1300a(6) =8866a(7) =54849a(8) =372943a(9) =2466986a(10) =16335736a(11) =108823634a(12) =719573862a(13) =4776148981a(14) =31691581679a(15) =210171600724
External references
- oeis: A247768