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A322500 Number of tilings of a 7 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation. 2

%I #4 Dec 12 2018 10:54:01

%S 1,1,21,257,2989,34468,396500,4577274,52338705,600923375,6897569624,

%T 79170705722,908721438900,10430285080567,119719520002653,

%U 1374133015203548,15772280213569812,181033948036338279,2077904397828614231,23850149155575310594,273751580233289217307

%N Number of tilings of a 7 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation.

%C The shapes of the tiles are:

%C ._.

%C ._. | |

%C ._. | | | |

%C ._. | |_. | |_._. | |_._._.

%C |_| |___| |_____| |_______| ... .

%H Alois P. Heinz, <a href="/A322500/b322500.txt">Table of n, a(n) for n = 0..944</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyomino">Polyomino</a>

%Y Column k=7 of A322494.

%K nonn

%O 0,3

%A _Alois P. Heinz_, Dec 12 2018

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Last modified March 2 00:03 EST 2024. Contains 370447 sequences. (Running on oeis4.)