This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A251809 Decimal expansion of 3*sqrt(2)*Pi^3/128. 4
 1, 0, 2, 7, 7, 2, 2, 5, 8, 5, 9, 3, 6, 8, 5, 8, 5, 6, 7, 8, 7, 9, 2, 5, 6, 6, 1, 8, 0, 0, 2, 2, 5, 5, 7, 6, 7, 2, 1, 0, 1, 0, 0, 3, 1, 8, 5, 3, 6, 9, 9, 7, 4, 6, 5, 3, 3, 1, 0, 8, 4, 7, 5, 5, 1, 8, 5, 2, 5, 7, 7, 7, 2, 4, 6, 8, 5, 8, 4, 9, 6, 8, 0, 3, 5, 1 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 REFERENCES L. B. W. Jolley, Summation of series, Dover Publications Inc. (New York), 1961, p. 64 (formula 340). LINKS G. C. Greubel, Table of n, a(n) for n = 1..10000 FORMULA Equals Sum_{i >= 0} (-1)^floor(i/2)/(2i+1)^3 = +1 +1/3^3 -1/5^3 -1/7^3 +1/9^3 +1/11^3 - ... EXAMPLE 1.027722585936858567879256618002255767210100318536997465331084755185... MATHEMATICA RealDigits[3 Sqrt[2] Pi^3/128, 10, 90][[1]] PROG (PARI) 3*sqrt(2)*Pi^3/128 \\ G. C. Greubel, Jul 27 2018 (MAGMA) R:= RealField(); 3*Sqrt(2)*Pi(R)^3/128; // G. C. Greubel, Jul 27 2018 CROSSREFS Cf. A153071: Sum_{i >= 0} (-1)^i/(2i+1)^3. Cf. A233091: Sum_{i >= 0} 1/(2i+1)^3. Sequence in context: A011052 A153738 A159790 * A016639 A138341 A153520 Adjacent sequences:  A251806 A251807 A251808 * A251810 A251811 A251812 KEYWORD nonn,cons AUTHOR Bruno Berselli, Dec 10 2014 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 March 21 22:19 EDT 2019. Contains 321382 sequences. (Running on oeis4.)