This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A164109 Decimal expansion of Pi^4/3. 9
 3, 2, 4, 6, 9, 6, 9, 7, 0, 1, 1, 3, 3, 4, 1, 4, 5, 7, 4, 5, 4, 8, 0, 1, 1, 0, 8, 9, 6, 2, 3, 5, 0, 3, 7, 0, 8, 3, 2, 4, 2, 5, 2, 8, 5, 5, 7, 5, 6, 1, 8, 0, 7, 2, 3, 0, 4, 8, 9, 2, 8, 6, 4, 6, 3, 3, 2, 3, 6, 1, 8, 4, 8, 5, 6, 0, 9, 0, 6, 5, 3, 9, 6, 7, 0, 7, 2, 8, 9, 0, 7, 8, 2, 5, 0, 9, 9, 7, 5, 1, 6, 9, 8, 9, 7 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS Surface area of the 8-dimensional unit sphere. LINKS G. C. Greubel, Table of n, a(n) for n = 2..5000 Eric Weisstein, Hypersphere, Wolfram Mathworld. Wikipedia, Hypersphere FORMULA Equals 8*A164108 = A019670*A091925 = A092425/3. EXAMPLE Equals 32.4696970113341457454801108962350370832425285.. MATHEMATICA RealDigits[Pi^4/3, 10, 120][[1]] (* Harvey P. Dale, Jul 31 2014 *) PROG (PARI) Pi^4/3 \\ G. C. Greubel, Sep 11 2017 CROSSREFS Cf. A019692, A019694, A164102, A164104, A091925, A164107. Sequence in context: A240539 A138245 A163328 * A116425 A019653 A240493 Adjacent sequences:  A164106 A164107 A164108 * A164110 A164111 A164112 KEYWORD cons,nonn AUTHOR R. J. Mathar, Aug 10 2009 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 December 16 03:39 EST 2018. Contains 318158 sequences. (Running on oeis4.)