A269958 Number of tilings of an 8 X 3n rectangle using 8n trominoes of any shape.

1, 1173, 5271923, 30860212081, 193553900967497, 1235348565576072999, 7918615596845276941783, 50812059004074711375396005, 326133836808482000144440191279, 2093399184722452211913343015136793, 13437387174568575272118729720355720407

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..262

Wikipedia, Tromino

Crossrefs

Trisection of column k=8 of A233320.

Sequence in context: A302958 A232082 A187725 * A033912 A204763 A204756

Adjacent sequences: A269955 A269956 A269957 * A269959 A269960 A269961

Keyword

nonn

Author

Alois P. Heinz, Mar 08 2016

Status

approved