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 A232734 Decimal expansion of Integral {x=0..infinity} 1/2^(2^x) dx. 0
 5, 4, 6, 3, 0, 6, 8, 3, 5, 9, 5, 2, 4, 8, 2, 7, 4, 1, 7, 3, 6, 0, 9, 8, 7, 6, 9, 6, 2, 4, 1, 0, 1, 3, 8, 8, 9, 3, 7, 6, 3, 5, 5, 3, 9, 0, 8, 1, 6, 5, 9, 1, 3, 5, 4, 1, 6, 7, 8, 3, 3, 9, 9, 1, 7, 6, 1, 6, 3, 6, 8, 9, 8, 4, 1, 1, 9, 6, 5, 7, 6, 7, 6, 1, 7, 4, 1, 2, 2, 1, 6, 3, 4, 1, 0, 3, 9, 5, 4, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS FORMULA -Ei(-log(2))/log(2), where Ei is the exponential integral function. Also equals (2*integral {x=0..1/2} log(log(1/x)) dx - log(log(2)))/(2*log(2)). EXAMPLE 0.546306835952482741736098769624101388937635539081659135416783399176163689841... MATHEMATICA RealDigits[-ExpIntegralEi[-Log[2]]/Log[2], 10, 100] // First PROG (PARI) eint1(log(2))/log(2) \\ Charles R Greathouse IV, Dec 02 2013 CROSSREFS Cf. A007400, A007404 (sum instead of integral). Sequence in context: A070365 A190613 A161011 * A298513 A021187 A075194 Adjacent sequences:  A232731 A232732 A232733 * A232735 A232736 A232737 KEYWORD nonn,cons AUTHOR Jean-François Alcover, Nov 29 2013 STATUS approved

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Last modified September 25 05:14 EDT 2021. Contains 347652 sequences. (Running on oeis4.)