OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..100
EXAMPLE
a(2) = 4, because there are 4 tilings of an 8 X 2 rectangle using straight (3 X 1) trominoes and 2 X 2 tiles:
.___. .___. .___. .___.
| | | | | | | | | |
|___| |___| | | | | | |
| | | | | |_|_| |_|_|
|___| | | | | | | | |
| | |_|_| |___| | | |
|___| | | | | | | |_|_|
| | | | | | | | | |
|___| |_|_| |_|_| |___|
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Dec 02 2012
STATUS
approved