%I #9 Jan 20 2018 10:19:56

%S 20,140,3861,7436

%N Number of circularly chained n-tuples of 3 X 3 alternating sign matrices.

%H 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 <a href="http://arxiv.org/abs/1611.03387">arXiv:1611.03387</a>.

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

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, Oct 19 2017