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 A286391 Number of tilings of a 6 X n rectangle using pentominoes of shapes X, Y, Z, T and monominoes. 3
 1, 1, 15, 344, 6835, 119392, 2136080, 38329669, 688355077, 12374676591, 222673114420, 4005005917279, 72004800735036, 1294444641691072, 23273376392535695, 418470613768822683, 7524342117053834729, 135288703461639048592, 2432489164334993344213 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..800 Wikipedia, Pentomino EXAMPLE a(2) = 15: .___. .___. .___. .___. .___. .___. .___. .___. .___. |_|_| | |_| |_| | | |_| |_|_| |_|_| |_|_| |_|_| | |_| |_|_| | ._| |_. | | ._| | |_| |_|_| |_|_| | |_| | |_| |_|_| | | | | | | | |_| | ._| | |_| | |_| | |_| | ._| |_|_| |_| | | |_| |_|_| | |_| | ._| | |_| | ._| |_|_| |_|_| |_. | | ._| |_|_| |_|_| | |_| | ._| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| .___. .___. .___. .___. .___. .___. |_| | |_|_| |_|_| |_|_| |_|_| |_| | |_. | |_| | |_|_| |_|_| |_| | |_| | |_| | |_. | |_| | |_| | |_| | |_. | |_|_| |_| | |_. | |_| | |_. | |_|_| |_|_| |_|_| |_| | |_. | |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_| |_|_|  . CROSSREFS Cf. A247125, A278330, A278456, A278657, A278877, A278964, A286347. Sequence in context: A157965 A321850 A100875 * A034975 A012787 A216449 Adjacent sequences:  A286388 A286389 A286390 * A286392 A286393 A286394 KEYWORD nonn AUTHOR Alois P. Heinz, May 08 2017 STATUS approved

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Last modified February 20 13:40 EST 2020. Contains 332077 sequences. (Running on oeis4.)