A278877 Number of tilings of a 6 X n rectangle using pentominoes of any shape and monominoes.

1, 3, 155, 11914, 728857, 42238426, 2492016728, 147382229321, 8704392890599, 514207059584879, 30367424047335204, 1793195869965086337, 105893252956708204722, 6253339527216096201144, 369279138864066223011929, 21807048314051213226593407

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..300

Wikipedia, Pentomino

Example

a(1) = 3:
._.   ._.   ._.
|_|   | |   |_|
|_|   | |   | |
|_|   | |   | |
|_|   | |   | |
|_|   |_|   | |
|_|   |_|   |_|  .

Crossrefs

Column k=6 of A278657.

Sequence in context: A344898 A327058 A087306 * A203682 A316479 A139964

Adjacent sequences: A278874 A278875 A278876 * A278878 A278879 A278880

Keyword

nonn

Author

Alois P. Heinz, Nov 29 2016

Status

approved