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A269958 Number of tilings of an 8 X 3n rectangle using 8n trominoes of any shape. 2

%I

%S 1,1173,5271923,30860212081,193553900967497,1235348565576072999,

%T 7918615596845276941783,50812059004074711375396005,

%U 326133836808482000144440191279,2093399184722452211913343015136793,13437387174568575272118729720355720407

%N Number of tilings of an 8 X 3n rectangle using 8n trominoes of any shape.

%H Alois P. Heinz, <a href="/A269958/b269958.txt">Table of n, a(n) for n = 0..262</a>

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

%Y Trisection of column k=8 of A233320.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Mar 08 2016

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Last modified July 28 14:19 EDT 2021. Contains 346335 sequences. (Running on oeis4.)