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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A246722 Decimal expansion of Hermite's constant gamma_7 = 2^(6/7). 1
1, 8, 1, 1, 4, 4, 7, 3, 2, 8, 5, 2, 7, 8, 1, 3, 3, 4, 3, 1, 8, 8, 3, 4, 5, 7, 4, 6, 4, 3, 0, 2, 0, 6, 3, 7, 5, 4, 0, 0, 8, 9, 1, 7, 6, 2, 5, 1, 5, 8, 7, 4, 7, 1, 0, 2, 3, 7, 4, 1, 6, 2, 6, 2, 7, 6, 8, 8, 4, 4, 9, 3, 4, 6, 2, 7, 1, 2, 5, 6, 7, 3, 9, 0, 9, 5, 2, 8, 7, 8, 7, 7, 8, 2, 0, 7, 1, 5, 5, 7, 4, 4, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also seventh root of 64. - Alonso del Arte, Feb 07 2015

REFERENCES

Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 8.7 Hermite's Constants, p. 507.

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..10000

Steven R. Finch, Errata and Addenda to Mathematical Constants, arXiv:2001.00578 [math.HO], 2020, p. 62.

FORMULA

Equals Product_{k>=0} (1 + (-1)^k/(7*k + 1)). - Amiram Eldar, Jul 29 2020

EXAMPLE

1.81144732852781334318834574643020637540089176251587471...

MATHEMATICA

RealDigits[2^(6/7), 10, 103] // First

PROG

(PARI) sqrtn(64, 7) \\ Michel Marcus, Feb 08 2015

CROSSREFS

Cf. A222071 (Hermite's delta_7), A011149, A005480.

Sequence in context: A128881 A154015 A300727 * A197492 A153621 A159822

Adjacent sequences:  A246719 A246720 A246721 * A246723 A246724 A246725

KEYWORD

nonn,cons,easy

AUTHOR

Jean-Fran├žois Alcover, Sep 02 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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 29 12:15 EDT 2020. Contains 337431 sequences. (Running on oeis4.)