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%I #10 Feb 06 2017 12:25:25
%S 1,2,50,1954,56864,1532496,42238426,1178422563,32890293494,
%T 917103556607,25552076570350,711923354658732,19838824712825618,
%U 552851181380560869,15406086995815163663,429312063890812931103,11963383230714027535776,333377000620725693771782
%N Number of tilings of a 5 X n rectangle using pentominoes of any shape and monominoes.
%H Alois P. Heinz, <a href="/A278456/b278456.txt">Table of n, a(n) for n = 0..692</a>
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Pentomino">Pentomino</a>
%e a(1) = 2:
%e ._. ._.
%e |_| | |
%e |_| | |
%e |_| | |
%e |_| | |
%e |_| |_| .
%Y Column k=5 of A278657.
%Y Cf. A174249, A233427, A273477.
%K nonn
%O 0,2
%A _Alois P. Heinz_, Nov 22 2016
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