OFFSET

1,2

COMMENTS

a(n) is the number of order-6 ribbon tilings of a 6 X n strip. Note that the width of the strip is equal to the order of ribbon tiles.

REFERENCES

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

LINKS

Yinsong Chen, Table of n, a(n) for n = 1..100

Yinsong Chen and Vladislav Kargin, The Number of Ribbon Tilings for Strips, arXiv:2307.00767 [math.CO], 2023.

CROSSREFS

KEYWORD

nonn

AUTHOR

Yinsong Chen, Aug 14 2023

STATUS

approved