A270069 - OEIS

%I #6 Feb 06 2017 12:33:59

%S 1,19,13413,5952243,2626057921,1162378878394,517174361985073,

%T 229681994753502100,101965922336345576219,45283517791861200639757,

%U 20109634299824273864511862,8930062817269356408791188106,3965614916098256915340694883017,1761030770921730133912679646624228

%N Number of tilings of a 9 X n rectangle using monominoes and trominoes of any shape.

%H Alois P. Heinz, <a href="/A270069/b270069.txt">Table of n, a(n) for n = 0..200</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Tromino">Tromino</a>

%Y Column k=9 of A270061.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Mar 09 2016