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Search: id:A093954
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| A093954 |
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Decimal expansion of Pi/(2*sqrt(2)). |
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+0
3
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| 1, 1, 1, 0, 7, 2, 0, 7, 3, 4, 5, 3, 9, 5, 9, 1, 5, 6, 1, 7, 5, 3, 9, 7, 0, 2, 4, 7, 5, 1, 5, 1, 7, 3, 4, 2, 4, 6, 5, 3, 6, 5, 5, 4, 2, 2, 3, 4, 3, 9, 2, 2, 5, 5, 5, 7, 7, 1, 3, 4, 8, 9, 0, 1, 7, 3, 9, 1, 0, 8, 6, 9, 8, 2, 7, 4, 8, 6, 8, 4, 7, 7, 6, 4, 3, 8, 3, 1, 7, 3, 3, 6, 9, 1, 1, 9, 1, 3, 0, 9, 3, 4
(list; cons; graph; listen)
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OFFSET
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1,5
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COMMENT
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Contribution from Eric Desbiaux (moongerms(AT)wanadoo.fr), Jan 18 2009: (Start)
Diagonal pi*sqrt(2)/4 of the square with side=sum(n=0;inf) (-1)^n/(2n+1),
area of the circumcircle=Pi*(Pi*sqrt(2)/8)^2=Pi^3/32=A153071
(End)
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,20000
Eric Weisstein's World of Mathematics, Bifoliate
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EXAMPLE
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1.11072073...
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PROGRAM
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(PARI) { default(realprecision, 20080); x=Pi*sqrt(2)/4; for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b093954.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 17 2009]
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CROSSREFS
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Cf. A161684 Continued fraction. [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 17 2009]
Sequence in context: A056009 A159252 A102771 this_sequence A153589 A010505 A020844
Adjacent sequences: A093951 A093952 A093953 this_sequence A093955 A093956 A093957
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KEYWORD
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nonn,cons,easy
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), Apr 19, 2004
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