A254607 - OEIS

%I #9 Dec 24 2019 08:32:33

%S 1,64,9866,2078716,486248000,117656540512,28778500622048,

%T 7063448084710944,1735575086258267968,426602245391808219456,

%U 104870171042459607741312,25780811901305515395438592,6337913024506813766449064064,1558108119479642808250383381248,383044676600298851289615284801792

%N Number of tilings of a 7 X n rectangle using polyominoes of shape I.

%C A polyomino of shape I is a rectangle of width 1.

%H Andrew Howroyd, <a href="/A254607/b254607.txt">Table of n, a(n) for n = 0..200</a>

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

%Y Column k=7 of A254414.

%K nonn

%O 0,2

%A _Alois P. Heinz_, Feb 02 2015

%E Terms a(11) and beyond from _Andrew Howroyd_, Dec 23 2019