The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A068079 Decimal expansion of 355 / 113. 5
 3, 1, 4, 1, 5, 9, 2, 9, 2, 0, 3, 5, 3, 9, 8, 2, 3, 0, 0, 8, 8, 4, 9, 5, 5, 7, 5, 2, 2, 1, 2, 3, 8, 9, 3, 8, 0, 5, 3, 0, 9, 7, 3, 4, 5, 1, 3, 2, 7, 4, 3, 3, 6, 2, 8, 3, 1, 8, 5, 8, 4, 0, 7, 0, 7, 9, 6, 4, 6, 0, 1, 7, 6, 9, 9, 1, 1, 5, 0, 4, 4, 2, 4, 7, 7, 8, 7, 6, 1, 0, 6, 1, 9, 4, 6, 9, 0, 2, 6, 5, 4, 8, 6, 7, 2, 5, 6, 6, 3, 7, 1, 6, 8, 1, 4, 1, 5, 9, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is an approximation to Pi. It is accurate to 0.00000849%. 355/113 is the third convergent of the continued fraction expansion of Pi (A001203). - Lekraj Beedassy, Jun 18 2003 In one of Ramanujan's papers, a note at the bottom states that "If the area of the circle be 140,000 square miles, then RD [RD = d/2 * Sqrt(355/113) = r*Sqrt(Pi), very nearly] is greater than the true length by about an inch." REFERENCES Ramanujan's papers, "Squaring the circle", Journal of the Indian Mathematical Society, V, 1913, 132. - Robert G. Wilson v, May 30 2014 LINKS Dario Castellanos, The ubiquitous pi, Math. Mag., 61 (1988), 67-98 and 148-163. [N. J. A. Sloane, Mar 24 2012] FORMULA a(n) = a(n - 112) for n > 113. - Jeppe Stig Nielsen, Dec 14 2019 MAPLE Digits:=100: evalf(355/113); # Wesley Ivan Hurt, Mar 14 2015 MATHEMATICA Flatten[RealDigits[355/113, 10, 100]] (* Wesley Ivan Hurt, Mar 14 2015 *) PROG (PARI) 355/113. \\ Charles R Greathouse IV, May 30 2014 (PARI) a(n) = if(n==1, 3, digits(16*10^112 \ 113)[(n-2) % 112 + 1]) \\ Jeppe Stig Nielsen, Dec 14 2019 CROSSREFS Cf. A068028, A068089, A002485, A002486, A046965, A046947. Sequence in context: A114609 A271452 A068089 * A152042 A057466 A187079 Adjacent sequences:  A068076 A068077 A068078 * A068080 A068081 A068082 KEYWORD easy,nonn,cons AUTHOR Nenad Radakovic, Mar 22 2002 EXTENSIONS More terms from Sascha Kurz, Mar 23 2002 Terms a(106) and beyond from Jeppe Stig Nielsen, Dec 14 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 2 10:12 EDT 2020. Contains 334769 sequences. (Running on oeis4.)