A036392 Coefficients of cluster series for site percolation problem on triangular lattice with 1st and 2nd neighbor bonds.

1, 12, 72, 342, 1632, 6780

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• more

References

• J. W. Essam, Percolation and cluster size, in C. Domb and M. S. Green, Phase Transitions and Critical Phenomena, Ac. Press 1972, Vol. 2; see especially pp. 225-226.

Links

• Index entries for sequences related to cluster series.

Crossrefs

Cf. A003200, A003203.

Extensions

Name clarified by Andrey Zabolotskiy, Mar 04 2021

a(0) from Pontus von Brömssen, May 21 2025