A270067 Number of tilings of a 7 X n rectangle using monominoes and trominoes of any shape.

1, 9, 1371, 148796, 15913695, 1707101599, 184140417890, 19823918037604, 2133436326533143, 229681994753502100, 24725866354382952217, 2661724100255128134369, 286536699674194768262220, 30845921492404301091244774, 3320584102598070051873302366

Offset: 0

Author

Alois P. Heinz, Mar 09 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..500
• Wikipedia, Tromino

Crossrefs

Column k=7 of A270061.