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A238258 Decimal expansion of a constant related to A002465. 4
3, 0, 8, 8, 2, 7, 7, 3, 0, 4, 7, 4, 1, 7, 4, 0, 1, 7, 9, 1, 1, 5, 8, 4, 0, 0, 8, 2, 0, 2, 5, 4, 3, 8, 2, 7, 6, 8, 3, 6, 4, 4, 4, 8, 9, 7, 1, 4, 2, 0, 1, 3, 8, 7, 6, 7, 2, 4, 7, 7, 3, 0, 1, 2, 1, 7, 6, 5, 1, 6, 8, 1, 2, 7, 8, 8, 2, 6, 6, 6, 6, 9, 5, 2, 0, 3, 2, 7, 1, 1, 3, 0, 9, 6, 1, 9, 4, 6, 0, 0, 9, 7, 3, 0, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
V. Kotesovec, Non-attacking chess pieces, 6ed, 2013, p.249
FORMULA
Equals lim n->infinity (A002465(n)/(n-1)!)^(1/n).
Equals -2 / (LambertW(-2*exp(-2)) * (2 + LambertW(-2*exp(-2)))).
Equals -2 / (A226775 * (2 + A226775)).
EXAMPLE
3.08827730474174017911584...
MATHEMATICA
RealDigits[N[-2/LambertW[-2/E^2]/(2+LambertW[-2/E^2]), 105]][[1]]
CROSSREFS
Sequence in context: A201580 A234518 A068458 * A011082 A189969 A021768
KEYWORD
nonn,cons
AUTHOR
Vaclav Kotesovec, Feb 21 2014
STATUS
approved

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Last modified June 20 08:27 EDT 2024. Contains 373512 sequences. (Running on oeis4.)