1,1

The hexagonal lattice is the familiar 2-dimensional lattice in which each point has 6 neighbors. This is sometimes called the triangular lattice.

G. A. Baker et al., On the two-dimensional, spin-1/2 Heisenberg ferromagnetic models, Phys. Lett., 25A (1967), 207-209.

G. Nebe and N. J. A. Sloane, Home page for hexagonal (or triangular) lattice A2

Sequence in context: A052625 A083233 A002918 this_sequence A037184 A085457 A105627

Adjacent sequences: A005396 A005397 A005398 this_sequence A005400 A005401 A005402

sign

njas