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A293932 Number of circularly chained n-tuples of 3 X 3 alternating sign matrices. 0
20, 140, 3861, 7436 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

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.

CROSSREFS

Cf. A005130, A293178, A293179, A293180, A293930, A059475, A293931.

Sequence in context: A105939 A054389 A253003 * A071816 A263960 A190067

Adjacent sequences:  A293929 A293930 A293931 * A293933 A293934 A293935

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 19 2017

STATUS

approved

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Last modified July 19 11:12 EDT 2019. Contains 325158 sequences. (Running on oeis4.)