A351486 a(n) is the number of primitive triangulations of a 7 X n rectangle.

3432, 43936824, 839660660268, 18792896208387012, 464476385680935656240, 12169409954141988707186052, 332633840844113103751597995920, 9369363517501208819530429967280708, 269621109753732518252493257828413137272, 7880009979020501614060394747170100093057300, 233031642883906149386619647304562977586311372556

Offset

1,1

Links

Table of n, a(n) for n=1..11.

S. Yu. Orevkov, Counting lattice triangulations: Fredholm equations in combinatorics, arXiv:2201.12827 [math.CO], 2022. See Table 4, p. 7.

Crossrefs

Cf. A082640 (m X n rectangle).

Cf. A351480, A351481, A351482, A351483.

Cf. A351484, A351485, A351487, A351488.

Sequence in context: A245860 A177307 A140911 * A362172 A177308 A177309

Adjacent sequences: A351483 A351484 A351485 * A351487 A351488 A351489

Keyword

nonn

Author

Stefano Spezia, Feb 12 2022

Status

approved