A291077 Number of prime 3-ary toroidal arrays with 3 rows and n columns.

8, 116, 2192, 44220, 956576, 21522344, 498111952, 11767874940, 282429537936, 6863037256208, 168456380799344, 4169295414184440, 103911670590189280, 2605214026691600584, 65651393478908052800, 1661800897428959110140, 42229293393638385042560

Offset

1,1

Links

Alois P. Heinz, Table of n, a(n) for n = 1..700

Veronika Irvine, Lace Tessellations: A mathematical model for bobbin lace and an exhaustive combinatorial search for patterns, PhD Dissertation, University of Victoria, 2016. See Table A.2.

Crossrefs

Sequence in context: A214695 A235338 A231553 * A056988 A085699 A046914

Adjacent sequences: A291074 A291075 A291076 * A291078 A291079 A291080

Keyword

nonn

Author

N. J. A. Sloane, Aug 18 2017

Extensions

More terms from Alois P. Heinz, Aug 20 2017

Status

approved