A293180 Number of linearly chained n-tuples of 3 X 3 alternating sign matrices.

7, 504, 49, 98028

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.

Sequence in context: A296175 A319831 A122523 * A203472 A219873 A224469

Adjacent sequences: A293177 A293178 A293179 * A293181 A293182 A293183

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 19 2017

Status

approved