A293178 Number of linearly chained pairs of n X n alternating sign matrices.

2, 17, 504, 53932

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.

Sequence in context: A370704 A217284 A220476 * A367831 A367829 A172341

Adjacent sequences: A293175 A293176 A293177 * A293179 A293180 A293181

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 19 2017

Status

approved