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

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A230582 Decimal expansion of the ratio of height to width of the bounding rectangle of the national flag of Nepal, as defined in Schedule 1 of Article 5 of the Constitution of Nepal. 0
1, 2, 1, 9, 0, 1, 0, 3, 3, 7, 8, 2, 9, 4, 5, 2, 1, 8, 4, 5, 7, 0, 0, 2, 4, 8, 6, 9, 9, 3, 0, 9, 8, 8, 5, 6, 6, 5, 9, 5, 0, 1, 2, 3, 3, 3, 3, 1, 9, 5, 6, 4, 5, 7, 3, 7, 1, 7, 0, 9, 5, 5, 9, 8, 1, 2, 6, 7, 3, 8, 9, 3, 2, 4, 5, 3, 4, 4, 0, 9, 0, 0, 6, 9, 7, 0, 2, 5, 6, 8, 5, 8, 1, 2, 0, 5, 8, 8, 6, 7, 6, 1, 5, 1, 6, 9, 5, 9, 6, 6, 4, 4, 1, 3, 8, 4, 9, 0, 5, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The flag of Nepal consists of two overlapping triangles:

A...D

|\  .

| \ .

|  \.

| E-F

|  \.

B---C

The bounding rectangle is then ABCD, and the ratio is AB/BC.

This constant is algebraic, specifically quartic. In particular it is the least root of 243356742235044x^4 - 1325568548812608x^3 + 2700899847521244x^2 - 2439951444086880x + 824634725389225. - Charles R Greathouse IV, Oct 24 2013

REFERENCES

Constitution of Nepal, Article 5, Schedule 1

LINKS

Table of n, a(n) for n=1..120.

Wikipedia, Flag of Nepal

Brady Haran, The Most Mathematical Flag

0xc.de (pseudonymous owner "Achim"), Nationalflagge von Nepal (with derivation of ratio)

FORMULA

(6136891429688-306253616715*sqrt(2)-(934861968+20332617192*sqrt(2)) * sqrt(118-48*sqrt(2)))/4506606337686.

EXAMPLE

1.219010337829452184570024869930988566...

CROSSREFS

Sequence in context: A224090 A013327 A009349 * A011186 A078088 A206243

Adjacent sequences:  A230579 A230580 A230581 * A230583 A230584 A230585

KEYWORD

nonn,cons

AUTHOR

Jeremy Tan, Oct 23 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified September 18 21:45 EDT 2014. Contains 246937 sequences.