A364428 Number of order-8 ribbon tilings for an 8 X n strip.

1, 2, 6, 24, 120, 720, 5040, 40320, 181440, 846720, 4097520, 20560176, 106949304, 576591048, 3220805709, 18634276859, 96125303465, 497468690754, 2585581989807, 13512032605810, 71086366996494, 376964624322607, 2017460369623984, 10909954789102904, 57546051294872504, 303513036994534272

Offset

1,2

Comments

a(n) is the number of order-8 ribbon tilings of an 8 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: A319209 A212310 A276842 * A273695 A177279 A173848

Adjacent sequences: A364425 A364426 A364427 * A364429 A364430 A364431

Keyword

nonn

Author

Yinsong Chen, Jul 26 2023

Status

approved