login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A120731 Decimal expansion of 3 + sqrt(2)/10. 1
3, 1, 4, 1, 4, 2, 1, 3, 5, 6, 2, 3, 7, 3, 0, 9, 5, 0, 4, 8, 8, 0, 1, 6, 8, 8, 7, 2, 4, 2, 0, 9, 6, 9, 8, 0, 7, 8, 5, 6, 9, 6, 7, 1, 8, 7, 5, 3, 7, 6, 9, 4, 8, 0, 7, 3, 1, 7, 6, 6, 7, 9, 7, 3, 7, 9, 9, 0, 7, 3, 2, 4, 7, 8, 4, 6, 2, 1, 0, 7, 0, 3, 8, 8, 5, 0, 3, 8, 7, 5, 3, 4, 3, 2, 7, 6, 4, 1, 5, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Said to be Dante Alighieri's approximation to Pi.

REFERENCES

Jörg Arndt and Christoph Haenel, Pi Unleashed, New York: Springer (2001), p. 56.

LINKS

Table of n, a(n) for n=1..100.

D. Castellanos, The ubiquitous pi, Math. Mag., 61 (1988), 67-98 and 148-163. [N. J. A. Sloane, Mar 24 2012]

EXAMPLE

3 + sqrt(2)/10 = 3.141421356237309504880168872..., which differs from Pi by 0.00017129735248373485...

CROSSREFS

Essentially the same sequence as A002193.

Sequence in context: A290478 A240698 A010602 * A294098 A087477 A029212

Adjacent sequences:  A120728 A120729 A120730 * A120732 A120733 A120734

KEYWORD

nonn,cons,easy

AUTHOR

Zak Seidov, Aug 18 2006

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 20 09:02 EST 2018. Contains 299384 sequences. (Running on oeis4.)