Number of tilings of a 5 X n rectangle using n pentominoes of any but the Y shape.
A247776
Number of tilings of a 5 X n rectangle using n pentominoes of any but the Y shape.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =44a(4) =321a(5) =2404a(6) =14692a(7) =98831a(8) =684729a(9) =4642752a(10) =31650422a(11) =213894450a(12) =1451388234a(13) =9868405649a(14) =66968132029a(15) =454745989239
External references
- oeis: A247776