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A238261
Decimal expansion of a constant related to A187235.
5
4, 9, 1, 0, 8, 1, 4, 9, 6, 4, 5, 6, 8, 2, 5, 5, 8, 9, 8, 7, 5, 1, 5, 3, 4, 8, 0, 5, 2, 4, 0, 3, 5, 2, 1, 9, 7, 8, 9, 8, 7, 0, 5, 2, 8, 1, 7, 6, 7, 8, 4, 7, 1, 7, 6, 1, 3, 9, 4, 1, 1, 2, 0, 2, 2, 5, 6, 4, 1, 7, 8, 7, 7, 8, 7, 9, 9, 4, 7, 9, 7, 2, 9, 5, 1, 8, 1, 9, 7, 4, 1, 5, 3, 5, 5, 4, 4, 6, 1, 4, 2, 5, 0, 5, 3
OFFSET
1,1
LINKS
FORMULA
Equals lim n->infinity (A187235(n)/(n-1)!)^(1/n).
Equals -(2*LambertW(-1,-exp(-1/2)/2))^2 / (1 + 2*LambertW(-1,-exp(-1/2)/2)).
EXAMPLE
4.9108149645682558987515348...
MATHEMATICA
RealDigits[N[-(2*LambertW[-1, -1/2/Sqrt[E]])^2/(1+2*LambertW[-1, -1/2/Sqrt[E]]), 105]][[1]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Vaclav Kotesovec, Feb 21 2014
STATUS
approved