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%I #6 Nov 28 2016 00:37:22
%S 1,1,258,7827,619773,31411948,1973546988,111496884663,6652506271144,
%T 385840008972355,22714686725936048,1326699809920740144,
%U 77815956863006419783,4553929883329302973354,266826017253691963185320,15623876956054896455317089,915167189151722925761420274
%N Number of tilings of an 8 X n rectangle using dominoes and right trominoes.
%H Alois P. Heinz, <a href="/A219991/b219991.txt">Table of n, a(n) for n = 0..200</a>
%Y Column k=8 of A219987.
%K nonn
%O 0,3
%A _Alois P. Heinz_, Dec 02 2012