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A364632
Number of tilings of an 8 X n rectangle using dominoes and trominoes (of any shape).
2
1, 4, 727, 84479, 9329739, 1122371638, 127878970311, 14838250606222, 1718701020524054, 200672595297189586, 23450223795056965768, 2739338254804093291920, 320025997655337939550000, 37387503156239089324459486, 4367768774150299801942333252
OFFSET
0,2
LINKS
Wikipedia, Tromino.
EXAMPLE
a(1) = 4:
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CROSSREFS
Column k=8 of A364457.
Sequence in context: A159618 A219012 A370449 * A059754 A134579 A090588
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 30 2023
STATUS
approved