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A248788 Decimal expansion of (2-sqrt(e))^2, the mean fraction of guests without a napkin in Conway’s napkin problem. 3
1, 2, 3, 3, 9, 6, 7, 4, 5, 6, 5, 8, 5, 3, 2, 6, 4, 7, 9, 6, 5, 6, 8, 4, 3, 2, 0, 0, 9, 6, 0, 0, 8, 2, 1, 1, 1, 4, 2, 1, 4, 2, 6, 9, 0, 8, 5, 9, 3, 6, 7, 5, 2, 8, 6, 6, 6, 6, 5, 0, 3, 8, 1, 1, 6, 1, 4, 3, 2, 5, 4, 5, 5, 7, 6, 6, 8, 5, 1, 6, 0, 0, 4, 0, 2, 7, 6, 0, 9, 8, 2, 9, 9, 6, 9, 9, 8, 5, 5, 4 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..99.

Anders Claesson and T. Kyle Petersen, Conway's napkin problem, arXiv:math/0505080 [math.CO], 2005.

Steven R. Finch, Errata and Addenda to Mathematical Constants, arXiv:2001.00578 [math.HO], 2020, p. 2.

FORMULA

Equals lim_{n->oo} A341232(n)/A341233(n). - Pontus von Brömssen, Feb 08 2021

EXAMPLE

0.12339674565853264796568432009600821114214269085936752866665...

MATHEMATICA

RealDigits[(2 - Sqrt[E])^2, 10, 100] // First

PROG

(PARI) (2-exp(1/2))^2 \\ Charles R Greathouse IV, Oct 31 2014

CROSSREFS

Cf. A000670, A068996, A248789, A341232, A341233.

Sequence in context: A210226 A209163 A124932 * A340914 A194232 A110042

Adjacent sequences:  A248785 A248786 A248787 * A248789 A248790 A248791

KEYWORD

nonn,cons,easy

AUTHOR

Jean-François Alcover, Oct 14 2014

STATUS

approved

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Last modified May 13 12:16 EDT 2021. Contains 343839 sequences. (Running on oeis4.)