A003488 High temperature series for spin-1/2 Ising surface susceptibility on planar hexagonal lattice. (Formerly M3662)

4, 36, 232, 1308, 6808, 33560, 159108

Offset

1,1

Comments

The hexagonal lattice is the familiar 2-dimensional 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).

P. G. Watson, in C. Domb and M. S. Green, Phase Transitions and Critical Phenomena, Ac. Press 1972, Vol. 2, p. 136.

Links

Table of n, a(n) for n=1..7.

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

Crossrefs

Sequence in context: A197424 A306094 A018217 * A295411 A218516 A119579

Adjacent sequences: A003485 A003486 A003487 * A003489 A003490 A003491

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved