|
| |
|
|
A247766
|
|
Number of tilings of a 5 X n rectangle using n pentominoes of any but the F shape.
|
|
2
|
|
|
|
1, 1, 5, 52, 437, 3342, 21734, 155685, 1153475, 8422634, 60853524, 438333924, 3175356262, 23029289042, 166811590187, 1207552045117, 8742472744191, 63314217459429, 458530998840648, 3320452657540486, 24044504957977794, 174117682083426003, 1260888371373690768
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,3
|
|
|
LINKS
|
|
|
|
FORMULA
|
a(n) ~ c * d^n, where d = 7.241529119192925682256364476268481441420871104664776204493646758..., c = 0.152901253189973886265833028181003326101047083395939246873454890... . - Vaclav Kotesovec, Mar 05 2016
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
