A219950 Number of tilings of a 9 X n rectangle using right trominoes and 2 X 2 tiles.

1, 0, 16, 0, 560, 384, 46824, 253952, 5141408, 44013568, 628801280, 6441106368, 81395792936, 898467518528, 10813539098984, 123094927843072, 1452323503655432, 16743873126866752, 195934939996794440, 2270867565108570304, 26483057736012701952

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..300

Crossrefs

Column k=9 of A219946.

Sequence in context: A221404 A221726 A221729 * A221271 A198804 A274377

Adjacent sequences: A219947 A219948 A219949 * A219951 A219952 A219953

Keyword

nonn

Author

Alois P. Heinz, Dec 01 2012

Status

approved