A270065 Number of tilings of a 5 X n rectangle using monominoes and trominoes of any shape.

1, 4, 140, 3710, 96176, 2501946, 65410388, 1707101599, 44538604036, 1162378878394, 30334909910156, 791636651386694, 20659194865202206, 539139829390310029, 14069828639020139191, 367177676400256677129, 9582168262012437486944, 250064069442551102774366

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..700

Vaclav Kotesovec, Recurrence (of order 135) and g.f.

Wikipedia, Tromino

Crossrefs

Column k=5 of A270061.

Sequence in context: A291450 A093981 A055304 * A002917 A235536 A229453

Adjacent sequences: A270062 A270063 A270064 * A270066 A270067 A270068

Keyword

nonn

Author

Alois P. Heinz, Mar 09 2016

Status

approved