%I
%S 2,17,504,53932
%N Number of linearly chained pairs of n X n alternating sign matrices.
%H Heuer, Dylan, Chelsey Morrow, Ben Noteboom, Sara Solhjem, Jessica Striker, and Corey Vorland. "Chained permutations and alternating sign matricesâ€”Inspired by threeperson chess." Discrete Mathematics 340, no. 12 (2017): 27322752. Also <a href="http://arxiv.org/abs/1611.03387">arXiv:1611.03387</a>.
%Y Cf. A005130.
%K nonn,more
%O 1,1
%A _N. J. A. Sloane_, Oct 19 2017
