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I. Jensen, Table of n, a(n) for n = 0..100 (from link below)
I. Jensen, More terms
I. G. Enting, A, J. Guttmann and I. Jensen, Low-Temperature Series Expansions for the Spin-1 Ising Model, J. Phys. A. 27 (1994) 6987-7006.
Cf. A010105 (leading term is really 1.5).
Sequence in context: A290326 A284947 A261099 * A058878 A236289 A257536
Adjacent sequences: A030117 A030118 A030119 * A030121 A030122 A030123
N. J. A. Sloane.