A036791 - OEIS

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A036791

Continued fraction for (2/Pi)*Integral_{x=0..Pi} sin(x)/x.

1, 5, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 6, 1, 1, 1, 1, 1, 9, 24, 1, 3, 1, 7, 1, 5, 1, 2, 2, 3, 1, 2, 2, 1, 8, 11, 4, 2, 2, 2, 1, 2, 2, 1, 1, 2, 1, 23, 1, 3, 3, 1, 6, 2, 9, 1, 3, 2, 17, 1, 5, 3, 1, 8, 1, 1, 1, 1, 1, 4, 1, 5, 1, 2, 1, 38, 1, 5, 5, 2, 6, 2, 73, 1, 1, 1, 194, 27, 1, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

Continued fraction expansion for Integrate[Binomial[1,x], {x,0,1}]. - Joseph Biberstine (jrbibers(AT)indiana.edu), Apr 13 2006

Integral(sin(x)/x dx) = x - x^3/(3*3!) + x^5/(5*5!) - x^7/(7*7!) + ... - Harry J. Smith, Apr 28 2009

LINKS

Harry J. Smith, Table of n, a(n) for n = 0..19999

G. Xiao, Contfrac

Index entries for continued fractions for constants

EXAMPLE

1.178979744472167270232028845... = 1 + 1/(5 + 1/(1 + 1/(1 + 1/(2 + ...)))). - Harry J. Smith, Apr 28 2009

MATHEMATICA

ContinuedFraction[N[Integrate[Binomial[1, x], {x, 0, 1}], 120]] (* Joseph Biberstine (jrbibers(AT)indiana.edu), Apr 13 2006 *)

PROG

(PARI) { allocatemem(932245000); default(realprecision, 21000); y=0; x=Pi; m=x; x2=x*x; n=1; nf=1; s=1; while (x!=y, y=x; n++; nf*=n; n++; nf*=n; m*=x2; s=-s; x+=s*m/(n*nf)); x*=2/Pi; x=contfrac(x); for (n=1, 20000, write("b036791.txt", n-1, " ", x[n])); } \\ Harry J. Smith, Apr 28 2009

CROSSREFS

Cf. A036793 (decimal expansion).

Sequence in context: A320410 A011396 A256503 * A340513 A180136 A346916

Adjacent sequences: A036788 A036789 A036790 * A036792 A036793 A036794

KEYWORD

nonn,cofr

AUTHOR

N. J. A. Sloane

EXTENSIONS

Offset changed by Andrew Howroyd, Aug 03 2024

STATUS

approved