

A006813


Percolation series for directed hexagonal lattice.
(Formerly M2778)


1




OFFSET

1,1


COMMENTS

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


REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS



CROSSREFS



KEYWORD

nonn,more


AUTHOR



STATUS

approved



