OFFSET
0,1
LINKS
Robert Shrock and F. Y. Wu, Spanning Trees on Graphs and Lattices in d Dimensions pp. 21-25.
Wikipedia, Truncated hexagonal tiling
FORMULA
EXAMPLE
0.720563322866577106077364520627957552422383519332367042383614...
MATHEMATICA
H = Sqrt[3]/(6*Pi)*PolyGamma[1, 1/6] - Pi/Sqrt[3] - Log[6]; RealDigits[(1/6)*(Log[2] + 2*Log[3] + Log[5] + H), 10, 103] // First
CROSSREFS
KEYWORD
AUTHOR
Jean-François Alcover, Jul 31 2014
STATUS
approved