A270066 Number of tilings of a 6 X n rectangle using monominoes and trominoes of any shape.

1, 6, 438, 23509, 1238818, 65410388, 3473827027, 184140417890, 9756894398324, 517174361985073, 27412100990502042, 1452889626133073024, 77006768282516987969, 4081555197498259422846, 216332403430110823588762, 11466150014825389043509015

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..580

Wikipedia, Tromino

Crossrefs

Column k=6 of A270061.

Sequence in context: A262013 A028665 A231316 * A001328 A174777 A265168

Adjacent sequences: A270063 A270064 A270065 * A270067 A270068 A270069

Keyword

nonn

Author

Alois P. Heinz, Mar 09 2016

Status

approved