1,1
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.
Sequence in context: A139234 A039784 A028243 * A197891 A202789 A129743
Adjacent sequences: A003490 A003491 A003492 * A003494 A003495 A003496
nonn
N. J. A. Sloane (njas(AT)research.att.com).