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A270071
Number of tilings of an n X n square using monominoes and trominoes of any shape.
4
1, 1, 5, 93, 7517, 2501946, 3473827027, 19823918037604, 466326405037190729, 45283517791861200639757, 18137923612752525595542410804, 29967243098804386765778629249653298, 204247259656641635611144023845458294818885
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
Liang Kai, Table of n, a(n) for n = 0..17
Wikipedia, Tromino
CROSSREFS
Main diagonal of A270061.
Sequence in context: A012784 A136097 A015030 * A047052 A049662 A264176
Adjacent sequences: A270068 A270069 A270070 * A270072 A270073 A270074
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Mar 09 2016
STATUS
approved

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Last modified May 22 04:27 EDT 2026. Contains 395816 sequences.
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