A364426 Number of order-6 ribbon tilings for a 6 X n strip.

1, 2, 6, 24, 120, 720, 2520, 9240, 35490, 142758, 601167, 2648967, 10532752, 42054602, 168941427, 684260967, 2800315185, 11604074418, 47073995851, 190962943230, 775113276195, 3150369602031, 12833577676317, 52456318079954, 213463250487565

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

Sequence in context: A263751 A263745 A276840 * A178011 A189853 A189857

Adjacent sequences: A364423 A364424 A364425 * A364427 A364428 A364429

Keyword

nonn

Author

Yinsong Chen, Aug 14 2023

Status

approved