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Search: id:A010503
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| A010503 |
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Decimal expansion of 1/sqrt(2). |
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+0
8
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| 7, 0, 7, 1, 0, 6, 7, 8, 1, 1, 8, 6, 5, 4, 7, 5, 2, 4, 4, 0, 0, 8, 4, 4, 3, 6, 2, 1, 0, 4, 8, 4, 9, 0, 3, 9, 2, 8, 4, 8, 3, 5, 9, 3, 7, 6, 8, 8, 4, 7, 4, 0, 3, 6, 5, 8, 8, 3, 3, 9, 8, 6, 8, 9, 9, 5, 3, 6, 6, 2, 3, 9, 2, 3, 1, 0, 5, 3, 5, 1, 9, 4, 2, 5, 1, 9, 3, 7, 6, 7, 1, 6, 3, 8, 2, 0, 7, 8, 6, 3, 6, 7, 5, 0, 6
(list; cons; graph; listen)
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OFFSET
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0,1
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COMMENT
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The decimal expansion of sqrt(50) = 5*sqrt(2) = 7.0710678118654752440... gives essentially the same sequence.
1/sqrt(2)=cos(pi/4)=sqrt(2)/2 [From Eric Desbiaux (moongerms(AT)wanadoo.fr), Nov 05 2008]
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,20000
Bell inequalities, Grothendieck's constant and root two [From Eric Desbiaux (moongerms(AT)wanadoo.fr), Nov 05 2008]
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EXAMPLE
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1/sqrt(2) = 0.7071067811865475...
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MATHEMATICA
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N[ 1/Sqrt[2], 200]
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PROGRAM
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(PARI) { default(realprecision, 20080); x=10*(1/sqrt(2)); for (n=0, 20000, d=floor(x); x=(x-d)*10; write("b010503.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 02 2009]
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CROSSREFS
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Cf. A040042.
Sequence in context: A036479 A085966 A010678 this_sequence A158857 A011438 A019597
Adjacent sequences: A010500 A010501 A010502 this_sequence A010504 A010505 A010506
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KEYWORD
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nonn,cons
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Added more terms. Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 02 2009
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