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%I #9 Feb 07 2017 10:42:11
%S 1,0,4,0,16,32,76,384,386,2976,3952,20520,41104,136160,393624,1027072,
%T 3412146,8470840,27988904,74155272,230939032,655493408,1942645984,
%U 5765577688,16807041186,50708538824,148118970352,446903215688,1320213337712,3968685090000
%N Number of tilings of a 10 X n rectangle using 2n pentominoes of shape L.
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Pentomino">Pentomino</a>
%Y Cf. A174249, A233427.
%K nonn
%O 0,3
%A _Alois P. Heinz_, Nov 19 2014
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