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A235362 Decimal expansion of the cube root of 2 divided by 2. 3
6, 2, 9, 9, 6, 0, 5, 2, 4, 9, 4, 7, 4, 3, 6, 5, 8, 2, 3, 8, 3, 6, 0, 5, 3, 0, 3, 6, 3, 9, 1, 1, 4, 1, 7, 5, 2, 8, 5, 1, 2, 5, 7, 3, 2, 3, 5, 0, 7, 5, 3, 9, 9, 0, 0, 4, 0, 9, 8, 7, 5, 5, 6, 0, 7, 7, 6, 4, 9, 8, 3, 8, 2, 5, 6, 9, 7, 9, 7, 4, 1, 8, 6, 4, 6, 9, 8, 2, 8, 1, 2, 1, 8, 1, 2, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Also reciprocal of the real cubic root of 4 and negated real part of either complex cubic root of 2.
LINKS
Richard Zippel, The Weyl Computer Algebra Substrate in Design and Implementation of Symbolic Computation Systems: International Symposium, DISCO '93 Gmunden, Austria, September 15-17, 1993. Proceedings, p. 306.
FORMULA
2^(1/3)/2 = 1/2^(2/3) = 1/4^(1/3).
(-2^(1/3)/2 + sqrt(-3)/4^(1/3))^3 = 2.
Equals 1/A005480 = A002580 /2 . - Wolfdieter Lang, Jan 02 2023
EXAMPLE
0.6299605249474365823836053...
MAPLE
Digits := 100 ; evalf(1/2^(2/3)) ; # R. J. Mathar, Jan 16 2023
MATHEMATICA
RealDigits[1/2^(2/3), 10, 128][[1]]
PROG
(PARI) sqrtn(1/4, 3) \\ Charles R Greathouse IV, Apr 14 2014
CROSSREFS
Sequence in context: A050235 A223536 A339410 * A018801 A055021 A260329
KEYWORD
nonn,cons,easy
AUTHOR
Alonso del Arte, Jan 07 2014
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)