A364425 - OEIS

%I #8 Sep 13 2023 23:10:18

%S 1,2,6,24,120,360,1140,3810,13434,49946,169024,574844,1970274,6826161,

%T 23977111,82657670,284973586,983395989,3400594524,11800532430,

%U 40796408747,141019980545,487480906364,1685757928053,5834545502357,20178892885120

%N Number of order-5 ribbon tilings for a 5 X n strip.

%C a(n) is the number of order-5 ribbon tilings of a 5 X n strip. Note that the width of the strip is equal to the order of ribbon tiles.

%D Yinsong Chen and Vladislav Kargin, The Number of ribbon tilings for strips, Discrete Applied Mathematics, Volume 340, 15 December 2023, pages 85-103.

%H Yinsong Chen, <a href="/A364425/b364425.txt">Table of n, a(n) for n = 1..100</a>

%H Yinsong Chen and Vladislav Kargin, <a href="https://arxiv.org/abs/2307.00767">The Number of Ribbon Tilings for Strips</a>, arXiv:2307.00767 [math.CO], 2023.

%K nonn

%O 1,2

%A _Yinsong Chen_, Aug 14 2023