OFFSET
1,1
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
R. V. Ditzian and L. P. Kadanoff, Series studies of the four-state Potts model, J. Phys. A 12 (1979), L229-L233.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
Typo in a(9) corrected by Andrey Zabolotskiy, Feb 09 2022
STATUS
approved