OFFSET
0,1
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 5.22 Lenz-Ising constants, p. 399.
FORMULA
log(2) + log(3)/4 + H/2, where H is defined in A242967.
EXAMPLE
0.879585386161571517093896028307972843...
MATHEMATICA
H = Sqrt[3]/(6*Pi)*PolyGamma[1, 1/6] - Pi/Sqrt[3] - Log[6]; Log[2] + Log[3]/4 + H/2 // RealDigits[#, 10, 103] & // First
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Jean-François Alcover, May 28 2014
STATUS
approved