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A010480
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Decimal expansion of square root of 24.
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11
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4, 8, 9, 8, 9, 7, 9, 4, 8, 5, 5, 6, 6, 3, 5, 6, 1, 9, 6, 3, 9, 4, 5, 6, 8, 1, 4, 9, 4, 1, 1, 7, 8, 2, 7, 8, 3, 9, 3, 1, 8, 9, 4, 9, 6, 1, 3, 1, 3, 3, 4, 0, 2, 5, 6, 8, 6, 5, 3, 8, 5, 1, 3, 4, 5, 0, 1, 9, 2, 0, 7, 5, 4, 9, 1, 4, 6, 3, 0, 0, 5, 3, 0, 7, 9, 7, 1, 8, 8, 6, 6, 2, 0, 9, 2, 8, 0, 4, 6, 9, 6, 3, 7, 1, 8
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OFFSET
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1,1
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COMMENTS
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Continued fraction expansion is 4 followed by {1, 8} repeated. - Harry J. Smith, Jun 03 2009
The solution to the Lane-Emden equation for a sphere of polytropic index n = 0. - Arkadiusz Wesolowski, Nov 11 2014
Using Bretschneider's formula this is the maximum area of a quadrilateral with side lengths of 1,2,3 and 4. - Scott R. Shannon, Jan 06 2020
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LINKS
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FORMULA
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Equals 4 + Sum_{k>=0} (-1)^k * binomial(2*k,k)/((k+1) * 8^k). - Amiram Eldar, May 06 2022
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EXAMPLE
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4.898979485566356196394568149411782783931894961313340256865385134501920....
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MATHEMATICA
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PROG
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(PARI) default(realprecision, 20080); x=sqrt(24); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010480.txt", n, " ", d)); \\ Harry J. Smith, Jun 03 2009
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Final digits of sequence corrected using the b-file. - N. J. A. Sloane, Aug 30 2009
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STATUS
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approved
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