A278878 Number of tilings of a 7 X n rectangle using pentominoes of any shape and monominoes.

1, 4, 508, 76003, 9616962, 1178422563, 147382229321, 18446349150367, 2306845502243104, 288660593026069762, 36110872742261362007, 4516714276347536995415, 564976767651757484324113, 70671912291059592748455901, 8840222401663200361818980813

Offset: 0

Author

Alois P. Heinz, Nov 29 2016

Keywords

• nonn

Examples

			a(1) = 4:
._.   ._.   ._.   ._.
|_|   | |   |_|   |_|
|_|   | |   | |   |_|
|_|   | |   | |   | |
|_|   | |   | |   | |
|_|   |_|   | |   | |
|_|   |_|   |_|   | |
|_|   |_|   |_|   |_|  .
		

Links

• Wikipedia, Pentomino

Crossrefs

Column k=7 of A278657.