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 A247443 Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, L, Y. 10
 1, 0, 2, 0, 6, 16, 32, 104, 186, 800, 1700, 4836, 11186, 29940, 84388, 208808, 563364, 1391664, 3787510, 9824684, 25712276, 66815444, 173151378, 457266220, 1188536784, 3113743272, 8087358736, 21152284376, 55283003950, 144314582896, 376852311434, 982507243820 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..1000 Alois P. Heinz, G.f. and Maple program for A247443 Wikipedia, Pentomino FORMULA G.f.: see link. EXAMPLE a(5) = 16: ._._______.        ._______._. | | ._____|        |_. .___| | | |_| ._| |        | |_| ._| | | |_. |_. |        | |_. |_. | |___|_| | |        | ._|_| |_| |_______|_| (*8)   |_|_______| (*8)  . MAPLE # Maple program: see link. CROSSREFS Cf. A174249, A233427, A234312, A234931, A247680, A248102, A249762. Sequence in context: A129877 A307581 A261566 * A171734 A278746 A280217 Adjacent sequences:  A247440 A247441 A247442 * A247444 A247445 A247446 KEYWORD nonn AUTHOR Alois P. Heinz, Sep 23 2014 STATUS approved

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Last modified November 23 16:18 EST 2020. Contains 338590 sequences. (Running on oeis4.)