A246902 - OEIS

A246902

Number of tilings of a 5 X n rectangle using n pentominoes of distinct shapes.

1, 1, 0, 28, 200, 856, 2164, 5584, 13632, 23608, 27804, 16412, 4040

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

Wikipedia, Pentomino

EXAMPLE

a(3) = 28: 4 orientations of each of the following 7 patterns:

._____. ._____. ._____. ._____. ._____. ._____. ._____.

|___. | | | | |_. ._| | .___| | | | |_. | | ._| |

| | | | | | ._| | | | | | | | | ._| | | |___| | |_. |

| | |_| | |_| | | |_| | |_| ._| |_| ._| |_. ._| |___| |

| |_. | |___| | | |_. | | |_| | | |_| | | |_| | | |_|

|___|_| |_____| |___|_| |_____| |_____| |_____| |_____| .

CROSSREFS

KEYWORD

nonn,fini,full

AUTHOR

STATUS

approved