|
%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
| 