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A293932
Number of circularly chained n-tuples of 3 X 3 alternating sign matrices.
0
20, 140, 3861, 7436
OFFSET
1,1
LINKS
Heuer, Dylan, Chelsey Morrow, Ben Noteboom, Sara Solhjem, Jessica Striker, and Corey Vorland. "Chained permutations and alternating sign matrices - Inspired by three-person chess." Discrete Mathematics 340, no. 12 (2017): 2732-2752. Also arXiv:1611.03387.
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 19 2017
STATUS
approved