A055919 Number of directed site animals on hexagonal net (honeycomb) with n sites.
2, 4, 10, 24, 60, 152, 402, 1094, 3012, 8232, 22086
Offset: 1
Links
- A. J. Guttmann, Indicators of solvability for lattice models, Discrete Math., 217 (2000), 167-189.
- A. J. Guttmann and A. R. Conway, Hexagonal lattice directed site animals, Statistical Physics on the Eve of the Twenty-First Century, ed. M. T. Batchelor, World Scientific, 1999.
Crossrefs
Row sums of A055907.
Extensions
Name edited by Andrey Zabolotskiy, Jun 21 2022