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A019774
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Decimal expansion of sqrt(e).
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26
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1, 6, 4, 8, 7, 2, 1, 2, 7, 0, 7, 0, 0, 1, 2, 8, 1, 4, 6, 8, 4, 8, 6, 5, 0, 7, 8, 7, 8, 1, 4, 1, 6, 3, 5, 7, 1, 6, 5, 3, 7, 7, 6, 1, 0, 0, 7, 1, 0, 1, 4, 8, 0, 1, 1, 5, 7, 5, 0, 7, 9, 3, 1, 1, 6, 4, 0, 6, 6, 1, 0, 2, 1, 1, 9, 4, 2, 1, 5, 6, 0, 8, 6, 3, 2, 7, 7, 6, 5, 2, 0, 0, 5, 6, 3, 6, 6, 6, 4
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n = 1..20000
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FORMULA
| Sqrt(e) = Sum_(n=0, inf) 1/(2^n n!) = Sum_(n=0, inf) 1/(2n)!! - Daniel Forgues, April 17, 2011
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EXAMPLE
| 1.6487212707001281468486507878141635716537761007101480115750...
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MATHEMATICA
| RealDigits[N[Sqrt[E], 200]][[1]] (*From Vladimir Joseph Stephan Orlovsky, Feb 21 2011*)
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PROG
| (PARI) { default(realprecision, 20080); x=sqrt(exp(1)); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b019774.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 01 2009]
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CROSSREFS
| Cf. A058281 for continued fraction for Sqrt(e).
Sequence in context: A197833 A176786 A077669 * A195434 A199815 A155906
Adjacent sequences: A019771 A019772 A019773 * A019775 A019776 A019777
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KEYWORD
| nonn,cons
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| Fixed my PARI program, had -n Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 19 2009
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