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A270065 Number of tilings of a 5 X n rectangle using monominoes and trominoes of any shape. 2
1, 4, 140, 3710, 96176, 2501946, 65410388, 1707101599, 44538604036, 1162378878394, 30334909910156, 791636651386694, 20659194865202206, 539139829390310029, 14069828639020139191, 367177676400256677129, 9582168262012437486944, 250064069442551102774366 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 14 22:42 EST 2019. Contains 329987 sequences. (Running on oeis4.)