A233290 Number of tilings of a 6 X n rectangle with 2n trominoes of any shape.
1, 1, 11, 170, 939, 8342, 80092, 614581, 5271923, 45832761, 379419508, 3223419241, 27438555522, 231096250072, 1958024834151, 16593169804557, 140295718998907, 1187830239559588, 10056816580083721, 85104482994177208, 720410915948382970, 6098207777286812381
Offset: 0
Keywords
Examples
a(2) = 11: .___. .___. .___. .___. .___. .___. .___. .___. .___. .___. .___. | | | | ._| |_. | | ._| | | | |_. | | | | |_. | | ._| | ._| |_. | | | | |_| | | |_| |_| | | | | | |_| | | | | |_| |_| | |_| | | |_| |_|_| |___| |___| |___| |_|_| |___| |_|_| |___| |___| | | | | | | | | | | ._| |_. | | | | | ._| | | | |_. | | ._| |_. | | |_| |_| | | | | |_| | | |_| | | | |_| | | | | | |_| |_| | | |_| |_| | | |_| |_|_| |___| |___| |_|_| |___| |_|_| |___| |___| |___| |___| |___|.
Links
- Alois P. Heinz, Table of n, a(n) for n = 0..1000
- Vaclav Kotesovec, Recurrence (of order 126) and G.f.
- Wikipedia, Tromino