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A269664
Number of tilings of a 12 X n rectangle with 4n trominoes of any shape.
5
1, 1, 153, 58234, 1895145, 198253934, 27438555522, 1949314526229, 193553900967497, 20574308184277971, 1830607857363940042, 178792253082742021463, 17735061025562799941630, 1679378707647721857218932, 163105210594579645492072521, 15894545877032388610890500803
OFFSET
0,3
LINKS
Wikipedia, Tromino
CROSSREFS
Column k=12 of A233320.
Sequence in context: A073938 A278285 A111086 * A281857 A278708 A206266
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 02 2016
STATUS
approved