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Number of tilings of a 30 X n rectangle using 3n decominoes of shape I.
3

%I #8 Feb 06 2017 18:24:48

%S 1,1,1,1,1,1,1,1,1,1,89,225,415,665,981,1369,1835,2385,3025,3761,

%T 30169,79903,167957,314911,548011,902339,1422073,2161837,3188141,

%U 4580911,12815576,31665861,70135406,142741143,272097694,492367347,853768306,1428360119

%N Number of tilings of a 30 X n rectangle using 3n decominoes of shape I.

%H Alois P. Heinz, <a href="/A251079/b251079.txt">Table of n, a(n) for n = 0..100</a>

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

%Y Column k=10 of A251072.

%Y Cf. A250667.

%K nonn

%O 0,11

%A _Alois P. Heinz_, Nov 29 2014